首页 > 最新文献

Nanoscale最新文献

英文 中文
DNA Origami-Templated Gold Nanorod Dimer Nanoantennas: Enabling Addressable Optical Hotspots for Single Cancer Biomarker SERS Detection DNA Origami-Templated金纳米棒二聚体纳米天线:为单一癌症生物标记物 SERS 检测提供可寻址的光学热点
IF 6.7 3区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-12 DOI: 10.1039/d4nr01110d
Tapasi Sen, Mridu Sharma, Charanleen Kaur, Priyanka Singhmar, Shikha Rai
The convergence of DNA origami and surface-enhanced Raman spectroscopy (SERS) has opened up a new avenue in bioanalytical sciences, particularly in the detection of single-molecule proteins. This breakthrough has enabled the development of advanced sensor technologies for diagnostics. DNA origami offers a highly controllable framework for the precise positioning of nanostructures, resulting in superior SERS signal amplification. In our investigation, we have successfully designed and synthesized DNA origami-based gold nanorod monomer and dimer assemblies. Moreover, we have evaluated the potential of dimer assemblies for label-free detection of single biomolecule of Epidermal growth factor receptor (EGFR), a crucial biomarker in cancer research. Our findings have revealed that the significant Raman amplification generated by DNA origami-assembled gold nanorod dimer nanoantennas facilitates the label-free identification of Raman peaks of single proteins, which is a prime aim in biomedical diagnostics. The present work represents a significant advancement in leveraging plasmonic nanoantennas to realize single protein SERS for the detection of various cancer biomarkers with single-molecule sensitivity.
DNA 折纸和表面增强拉曼光谱(SERS)的融合为生物分析科学,特别是单分子蛋白质的检测开辟了一条新途径。这一突破推动了用于诊断的先进传感器技术的发展。DNA 折纸为纳米结构的精确定位提供了一个高度可控的框架,从而实现了卓越的 SERS 信号放大。在我们的研究中,我们成功地设计并合成了基于 DNA 折纸的金纳米棒单体和二聚体组装体。此外,我们还评估了二聚体组合物在无标记检测表皮生长因子受体(EGFR)单个生物分子方面的潜力,EGFR是癌症研究中的一种重要生物标志物。我们的研究结果表明,DNA Origami-assembled 金纳米棒二聚体纳米天线产生的显著拉曼放大作用有助于无标记识别单个蛋白质的拉曼峰,而这正是生物医学诊断的首要目标。本研究是利用质子纳米天线实现单个蛋白质 SERS 的重大进展,可用于检测各种具有单分子灵敏度的癌症生物标记物。
{"title":"DNA Origami-Templated Gold Nanorod Dimer Nanoantennas: Enabling Addressable Optical Hotspots for Single Cancer Biomarker SERS Detection","authors":"Tapasi Sen, Mridu Sharma, Charanleen Kaur, Priyanka Singhmar, Shikha Rai","doi":"10.1039/d4nr01110d","DOIUrl":"https://doi.org/10.1039/d4nr01110d","url":null,"abstract":"The convergence of DNA origami and surface-enhanced Raman spectroscopy (SERS) has opened up a new avenue in bioanalytical sciences, particularly in the detection of single-molecule proteins. This breakthrough has enabled the development of advanced sensor technologies for diagnostics. DNA origami offers a highly controllable framework for the precise positioning of nanostructures, resulting in superior SERS signal amplification. In our investigation, we have successfully designed and synthesized DNA origami-based gold nanorod monomer and dimer assemblies. Moreover, we have evaluated the potential of dimer assemblies for label-free detection of single biomolecule of Epidermal growth factor receptor (EGFR), a crucial biomarker in cancer research. Our findings have revealed that the significant Raman amplification generated by DNA origami-assembled gold nanorod dimer nanoantennas facilitates the label-free identification of Raman peaks of single proteins, which is a prime aim in biomedical diagnostics. The present work represents a significant advancement in leveraging plasmonic nanoantennas to realize single protein SERS for the detection of various cancer biomarkers with single-molecule sensitivity.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Molecular-level periodic arrays of long-chain poly (3-hexylthiophene-2,5-diyl) driven by electric field 电场驱动的长链聚(3-己基噻吩-2,5-二基)分子级周期阵列
IF 6.7 3区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-12 DOI: 10.1039/d4nr01900h
Mingze Ma, Jingyi Qian, Ke Jiang, Liyan Wang, Yu Song, Wenke Zhang
Two-dimensional (2D) periodic arrays of conductive polymers represent an attractive platform for wiring functional molecules into the integrated circuits of molecular electronics. However, the large-scale assembly of polymer periodic arrays at molecular level faces challenges such as curling, twisting, and aggregation. Here, we assembled the periodic arrays of long-chain poly(3-hexylthiophene-2,5-diyl) (P3HT, Mw = 65 k) at the solid-liquid interface by applying the electric field, in which the charged chain segments were aligned. The atomic force microscopy (AFM) imaging revealed that individual P3HT chains assemble into monolayers featuring a face-on orientation, extended chain conformation and isolated packing, which is thermodynamically more stable than folded chains in 2D polycrystals. The assembly process initiates with the formation of disordered clusters and progresses through voltage-dependent nucleation and growth of extended-chain arrays, wherein continuous conformational adjustments along the nucleation pathway exhibit the dependence on the cluster size.
二维(2D)导电聚合物周期性阵列是将功能分子连接到分子电子集成电路中的一个极具吸引力的平台。然而,在分子水平上大规模组装聚合物周期性阵列面临着卷曲、扭曲和聚集等挑战。在这里,我们通过施加电场在固液界面组装了长链聚(3-己基噻吩-2,5-二基)(P3HT,Mw = 65 k)周期性阵列,其中带电的链段排列整齐。原子力显微镜(AFM)成像显示,单个 P3HT 链组装成单层,具有面朝上取向、延伸链构象和孤立堆积的特点,在热力学上比二维多晶体中的折叠链更为稳定。组装过程从无序簇的形成开始,经过电压依赖性成核和延伸链阵列的生长,其中沿成核途径的连续构象调整显示了对簇大小的依赖性。
{"title":"Molecular-level periodic arrays of long-chain poly (3-hexylthiophene-2,5-diyl) driven by electric field","authors":"Mingze Ma, Jingyi Qian, Ke Jiang, Liyan Wang, Yu Song, Wenke Zhang","doi":"10.1039/d4nr01900h","DOIUrl":"https://doi.org/10.1039/d4nr01900h","url":null,"abstract":"Two-dimensional (2D) periodic arrays of conductive polymers represent an attractive platform for wiring functional molecules into the integrated circuits of molecular electronics. However, the large-scale assembly of polymer periodic arrays at molecular level faces challenges such as curling, twisting, and aggregation. Here, we assembled the periodic arrays of long-chain poly(3-hexylthiophene-2,5-diyl) (P3HT, Mw = 65 k) at the solid-liquid interface by applying the electric field, in which the charged chain segments were aligned. The atomic force microscopy (AFM) imaging revealed that individual P3HT chains assemble into monolayers featuring a face-on orientation, extended chain conformation and isolated packing, which is thermodynamically more stable than folded chains in 2D polycrystals. The assembly process initiates with the formation of disordered clusters and progresses through voltage-dependent nucleation and growth of extended-chain arrays, wherein continuous conformational adjustments along the nucleation pathway exhibit the dependence on the cluster size.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrocatalytic Nitrogen Reduction to Ammonia by Atomically Precise Cu6 Nanoclusters Supported on Graphene Oxide 以石墨烯氧化物为支撑的原子级精密 Cu6 纳米团簇电催化氮还原成氨
IF 6.7 3区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-12 DOI: 10.1039/d4nr01984a
Aamir Shehzad, Chaonan Cui, Ran Cheng, Zhixun Luo
The electrocatalytic nitrogen reduction reaction (NRR) enables the production of ammonia by the use of renewable energy, providing a direct method for nitrogen fixation. Nevertheless, the NRR process under ambient conditions is often impeded by inertness of N2 and the occurrence of hydrogen evolution as a byproduct in aqueous electrolytes, resulting in a diminished reaction rate and reduced efficiency. In this study, we synthesized Cu6(SMPP)6 nanoclusters (Cu6 NCs for short) and immobilized them on graphene oxide (GO) to investigate their electrocatalytic nitrogen reduction reaction (ENRR) using an H-cell setup. The GO-supported Cu6 NCs exhibit enhanced catalysis with a high NH3 yield rate of 4.8 µg‧h-1cm-2 and a high Faradaic efficiency up to 30.39% at -1.1 V. Quantum chemistry calculations reveal that the Cu6S6 cluster on GO support facilitates the N2 adsorption and N≡N bond activation with a surmountable energy barrier for the potential-determining step (N2* →NNH*).
电催化氮还原反应(NRR)能够利用可再生能源生产氨,为固氮提供了一种直接方法。然而,环境条件下的氮还原反应过程往往会受到 N2 的惰性和水电解质中副产物氢进化的阻碍,从而导致反应速率降低和效率下降。在本研究中,我们合成了 Cu6(SMPP)6 纳米团簇(简称 Cu6 NCs),并将其固定在氧化石墨烯(GO)上,利用 H 细胞装置研究其电催化氮还原反应(ENRR)。GO 支持的 Cu6 NCs 表现出更强的催化能力,在 -1.1 V 的电压下,NH3 产率高达 4.8 µg‧h-1cm-2,法拉第效率高达 30.39%。量子化学计算显示,GO 支持物上的 Cu6S6 团簇促进了 N2 的吸附和 N≡N 键的活化,其电位决定步骤(N2* →NNH*)的能量势垒是可以克服的。
{"title":"Electrocatalytic Nitrogen Reduction to Ammonia by Atomically Precise Cu6 Nanoclusters Supported on Graphene Oxide","authors":"Aamir Shehzad, Chaonan Cui, Ran Cheng, Zhixun Luo","doi":"10.1039/d4nr01984a","DOIUrl":"https://doi.org/10.1039/d4nr01984a","url":null,"abstract":"The electrocatalytic nitrogen reduction reaction (NRR) enables the production of ammonia by the use of renewable energy, providing a direct method for nitrogen fixation. Nevertheless, the NRR process under ambient conditions is often impeded by inertness of N2 and the occurrence of hydrogen evolution as a byproduct in aqueous electrolytes, resulting in a diminished reaction rate and reduced efficiency. In this study, we synthesized Cu6(SMPP)6 nanoclusters (Cu6 NCs for short) and immobilized them on graphene oxide (GO) to investigate their electrocatalytic nitrogen reduction reaction (ENRR) using an H-cell setup. The GO-supported Cu6 NCs exhibit enhanced catalysis with a high NH3 yield rate of 4.8 µg‧h-1cm-2 and a high Faradaic efficiency up to 30.39% at -1.1 V. Quantum chemistry calculations reveal that the Cu6S6 cluster on GO support facilitates the N2 adsorption and N≡N bond activation with a surmountable energy barrier for the potential-determining step (N2* →NNH*).","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ferroelectric modulation of CuCo2O4 nanorods for controllable alkaline water electrolysis. 用于可控碱性水电解的 CuCo2O4 纳米棒铁电调制。
IF 5.8 3区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-12 DOI: 10.1039/d4nr01320d
Ruixue Zhang, Jing Wang, Qiyan Sun, Fuyuan Cao, Guang-Rui Xu, Yu Miao, Chuanfang Zhang, Zexing Wu, Lei Wang

As a technology for emerging environmental applications, water electrolysis is a significant approach for producing clean hydrogen energy. In this work, we used an efficacious piezoelectric method to significantly improve the catalytic water splitting activity without affecting the morphology as well as the components by altering the bulk charge separation state inside the material. The obtained CuCo2O4 nanorods were treated under a corona polarization apparatus, which significantly enhanced ferroelectricity relative to that before the polarization increasing the physical charge separation and piezoelectric potential energy, enhancing the green hydrogen production. The polarized CuCo2O4 nanorods exhibit excellent water electrolysis performance under alkaline conditions, with hydrogen evolution overpotential of 78.7 mV and oxygen evolution overpotential of 299 mV at 10 mA cm-2, which is much better than that of unpolarized CuCo2O4 nanorods. Moreover, the Tafel slopes of polarized CuCo2O4 nanorods are 86.9 mV dec-1 in the HER process and 73.1 mV dec-1 in the OER process, which are much lower than commercial catalysts of Pt/C (88.0 mV dec-1 for HER) or RuO2 (78.5 mV dec-1 for OER), proving faster kinetic on polarized CuCo2O4 nanorods due to their higher electroconductibility and intrinsic activity. In particular, polarized CuCo2O4 nanorods are identified as promising catalysts for water electrolysis with robust stability, offering outstanding catalytic performance and excellent energy efficiency.

作为一种新兴的环境应用技术,水电解是生产清洁氢能的重要方法。在这项工作中,我们采用了一种有效的压电方法,通过改变材料内部的体电荷分离状态,在不影响形貌和组分的情况下显著提高了催化水分离活性。得到的 CuCo2O4 纳米棒在电晕极化装置下处理,铁电性比极化前显著增强,增加了物理电荷分离和压电势能,提高了绿色制氢能力。极化后的 CuCo2O4 纳米棒在碱性条件下具有优异的电解水性能,在 10 mA cm-2 的条件下,氢进化过电位为 78.7 mV,氧进化过电位为 299 mV,远优于未极化的 CuCo2O4 纳米棒。此外,极化 CuCo2O4 纳米棒在 HER 过程中的塔菲尔斜率为 86.9 mV dec-1,在 OER 过程中的塔菲尔斜率为 73.1 mV dec-1,远低于商业催化剂 Pt/C(HER 为 88.0 mV dec-1)或 RuO2(OER 为 78.5 mV dec-1)。极化的 CuCo2O4 纳米棒尤其被认为是有前途的水电解催化剂,具有强大的稳定性、出色的催化性能和卓越的能效。
{"title":"Ferroelectric modulation of CuCo<sub>2</sub>O<sub>4</sub> nanorods for controllable alkaline water electrolysis.","authors":"Ruixue Zhang, Jing Wang, Qiyan Sun, Fuyuan Cao, Guang-Rui Xu, Yu Miao, Chuanfang Zhang, Zexing Wu, Lei Wang","doi":"10.1039/d4nr01320d","DOIUrl":"https://doi.org/10.1039/d4nr01320d","url":null,"abstract":"<p><p>As a technology for emerging environmental applications, water electrolysis is a significant approach for producing clean hydrogen energy. In this work, we used an efficacious piezoelectric method to significantly improve the catalytic water splitting activity without affecting the morphology as well as the components by altering the bulk charge separation state inside the material. The obtained CuCo<sub>2</sub>O<sub>4</sub> nanorods were treated under a corona polarization apparatus, which significantly enhanced ferroelectricity relative to that before the polarization increasing the physical charge separation and piezoelectric potential energy, enhancing the green hydrogen production. The polarized CuCo<sub>2</sub>O<sub>4</sub> nanorods exhibit excellent water electrolysis performance under alkaline conditions, with hydrogen evolution overpotential of 78.7 mV and oxygen evolution overpotential of 299 mV at 10 mA cm<sup>-2</sup>, which is much better than that of unpolarized CuCo<sub>2</sub>O<sub>4</sub> nanorods. Moreover, the Tafel slopes of polarized CuCo<sub>2</sub>O<sub>4</sub> nanorods are 86.9 mV dec<sup>-1</sup> in the HER process and 73.1 mV dec<sup>-1</sup> in the OER process, which are much lower than commercial catalysts of Pt/C (88.0 mV dec<sup>-1</sup> for HER) or RuO<sub>2</sub> (78.5 mV dec<sup>-1</sup> for OER), proving faster kinetic on polarized CuCo<sub>2</sub>O<sub>4</sub> nanorods due to their higher electroconductibility and intrinsic activity. In particular, polarized CuCo<sub>2</sub>O<sub>4</sub> nanorods are identified as promising catalysts for water electrolysis with robust stability, offering outstanding catalytic performance and excellent energy efficiency.</p>","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141588956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Using non-adiabatic excitation transfer for signal transmission between molecular logic gates 利用非绝热激发传递实现分子逻辑门之间的信号传输
IF 6.7 3区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-11 DOI: 10.1039/d4nr01206b
Arthur Ilich Martynov, Aleksandr Sergeevich Belov, Vladimir Kirilovich Nevolin
Molecular logic gates (MLG) are molecules which perform logic operations. They can potentially be used as building blocks for nano sized computational devices. However, their physical and functional integration is a difficult task which remains to be solved. The problem lies in the field of signal exchange between the gates within the system. We propose using non-adiabatic excitation transfer between the gates to address this problem while absorption and fluorescence are left to communicate with external devices. Excitation transfer was studied using the modified Bixon-Jortner- Plotnikov theory on the example of the 3H-thioxanthene-TTF-dibenzo-BODIPY covalently linked triade. Several designs of the molecule were studied in vacuum and cyclohexane. It was found that the molecular logic system has to be planar and rigid to isolate radiative interfaces from other gates. Functioning of these gates is based on dark πσ∗-states in contrast to bright ππ∗-states of radiative interfaces. There are no fundamental difference between ππ∗ → πσ∗ and ππ∗ → ππ∗ transitions for cases when an exciton hopes from one gate to another. The rates of such transitions depend only on an energy gap between states and a distance between gates. A circuit is highly sensitive to the choice of solvent which could rearrange its state structure thereby altering its behavior. According to the obtained results, non-adiabatic transfer can be considered as one of the possible ways for transmitting a signal between MLGs.
分子逻辑门(MLG)是一种能进行逻辑运算的分子。它们有可能被用作纳米级计算设备的构件。然而,它们的物理和功能集成是一项尚待解决的难题。问题在于系统内门之间的信号交换。我们建议使用门之间的非绝热激发传递来解决这个问题,而吸收和荧光则留给外部设备进行通信。我们以 3H-thioxanthene-TTF-dibenzo-BODIPY 共价连接三元体为例,使用改进的 Bixon-Jortner- Plotnikov 理论对激发传递进行了研究。在真空和环己烷中对该分子的几种设计进行了研究。研究发现,分子逻辑系统必须是平面和刚性的,以便将辐射界面与其他门隔离开来。这些门的功能基于暗πσ∗态,与辐射界面的亮ππ∗态形成鲜明对比。当一个激子从一个栅极转到另一个栅极时,ππ∗ → πσ∗ 和 ππ∗ → ππ∗ 转换之间没有本质区别。这种跃迁的速率只取决于状态之间的能隙和栅极之间的距离。电路对溶剂的选择非常敏感,因为溶剂会重新排列其状态结构,从而改变其行为。根据所获得的结果,非绝热传输可被视为在 MLG 之间传输信号的可能方式之一。
{"title":"Using non-adiabatic excitation transfer for signal transmission between molecular logic gates","authors":"Arthur Ilich Martynov, Aleksandr Sergeevich Belov, Vladimir Kirilovich Nevolin","doi":"10.1039/d4nr01206b","DOIUrl":"https://doi.org/10.1039/d4nr01206b","url":null,"abstract":"Molecular logic gates (MLG) are molecules which perform logic operations. They can potentially be used as building blocks for nano sized computational devices. However, their physical and functional integration is a difficult task which remains to be solved. The problem lies in the field of signal exchange between the gates within the system. We propose using non-adiabatic excitation transfer between the gates to address this problem while absorption and fluorescence are left to communicate with external devices. Excitation transfer was studied using the modified Bixon-Jortner- Plotnikov theory on the example of the 3H-thioxanthene-TTF-dibenzo-BODIPY covalently linked triade. Several designs of the molecule were studied in vacuum and cyclohexane. It was found that the molecular logic system has to be planar and rigid to isolate radiative interfaces from other gates. Functioning of these gates is based on dark πσ∗-states in contrast to bright ππ∗-states of radiative interfaces. There are no fundamental difference between ππ∗ → πσ∗ and ππ∗ → ππ∗ transitions for cases when an exciton hopes from one gate to another. The rates of such transitions depend only on an energy gap between states and a distance between gates. A circuit is highly sensitive to the choice of solvent which could rearrange its state structure thereby altering its behavior. According to the obtained results, non-adiabatic transfer can be considered as one of the possible ways for transmitting a signal between MLGs.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
2-mercaptobenzothiazole and 2-mercaptobenzimidazole derived novel Ag16 and Ag18 nanoclusters: Synthesis and optical properties 2-巯基苯并噻唑和 2-巯基苯并咪唑衍生的新型 Ag16 和 Ag18 纳米团簇:合成与光学特性
IF 6.7 3区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-11 DOI: 10.1039/d4nr01606h
Bedanta Borah, Rohan Sharma, Pankaz K. Sharma, Apurba Kr Barman
Silver and gold nanoclusters are promising nanomaterials for various applications such as sensing, catalysis, and bioimaging. However, their synthetic control and repeatability, and determination of their structures are highly complicated. Only a handful of crystal structures of silver nanoclusters (AgNCs) are reported till date, while structures of few others have been reported with the help of mass spectrometry. We synthesized two AgNCs, viz., Ag-MBTNC (Ag16 cluster) and Ag-MBINC (Ag18 cluster) stabilized by 2-mercaptobenzothiazole (2-MBT) and 2-mercaptobenzimidazole (2-MBI) with excellent repeatability; determined their composition and plausible structures using XPS, TGA and MALDI-TOF mass spectrometry and compared their optical properties. Interestingly, Ag-MBTNC is fluorescent while Ag-MBINC is not, although these are synthesized using stabilizing ligand having difference in only one atom. The structural features of the clusters are found to be similar but have contrasting optical behaviors due to the effect of a S atom (in 2-MBT) in place of a N atom (in 2-MBI).
银和金纳米团簇是很有前途的纳米材料,可用于传感、催化和生物成像等多种应用领域。然而,它们的合成控制和可重复性以及结构的确定都非常复杂。迄今为止,只有少数几种银纳米团簇(AgNCs)的晶体结构被报道,而其他一些银纳米团簇的结构则是在质谱分析的帮助下被报道的。我们合成了两种银纳米团簇,即由 2-巯基苯并噻唑(2-MBT)和 2-巯基苯并咪唑(2-MBI)稳定的 Ag-MBTNC(Ag16 团簇)和 Ag-MBINC(Ag18 团簇),重复性极佳;利用 XPS、TGA 和 MALDI-TOF 质谱测定了它们的组成和可信结构,并比较了它们的光学特性。有趣的是,Ag-MBTNC 具有荧光性,而 Ag-MBINC 没有荧光性,尽管它们都是使用仅有一个原子不同的稳定配体合成的。研究发现,这两种团簇的结构特征相似,但由于一个 S 原子(在 2-MBT 中)取代了一个 N 原子(在 2-MBI 中),它们的光学行为截然不同。
{"title":"2-mercaptobenzothiazole and 2-mercaptobenzimidazole derived novel Ag16 and Ag18 nanoclusters: Synthesis and optical properties","authors":"Bedanta Borah, Rohan Sharma, Pankaz K. Sharma, Apurba Kr Barman","doi":"10.1039/d4nr01606h","DOIUrl":"https://doi.org/10.1039/d4nr01606h","url":null,"abstract":"Silver and gold nanoclusters are promising nanomaterials for various applications such as sensing, catalysis, and bioimaging. However, their synthetic control and repeatability, and determination of their structures are highly complicated. Only a handful of crystal structures of silver nanoclusters (AgNCs) are reported till date, while structures of few others have been reported with the help of mass spectrometry. We synthesized two AgNCs, viz., Ag-MBTNC (Ag16 cluster) and Ag-MBINC (Ag18 cluster) stabilized by 2-mercaptobenzothiazole (2-MBT) and 2-mercaptobenzimidazole (2-MBI) with excellent repeatability; determined their composition and plausible structures using XPS, TGA and MALDI-TOF mass spectrometry and compared their optical properties. Interestingly, Ag-MBTNC is fluorescent while Ag-MBINC is not, although these are synthesized using stabilizing ligand having difference in only one atom. The structural features of the clusters are found to be similar but have contrasting optical behaviors due to the effect of a S atom (in 2-MBT) in place of a N atom (in 2-MBI).","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Theranostic nanogels: multifunctional agents for simultaneous therapeutic delivery and diagnostic imaging. Theranostic 纳米凝胶:用于同时进行治疗和诊断成像的多功能制剂。
IF 5.8 3区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-11 DOI: 10.1039/d4nr01423e
Ismail Altinbasak, Yasin Alp, Rana Sanyal, Amitav Sanyal

In recent years, there has been a growing interest in multifunctional theranostic agents capable of delivering therapeutic payloads while facilitating simultaneous diagnostic imaging of diseased sites. This approach offers a comprehensive strategy particularly valuable in dynamically evolving diseases like cancer, where combining therapy and diagnostics provides crucial insights for treatment planning. Nanoscale platforms, specifically nanogels, have emerged as promising candidates due to their stability, tunability, and multifunctionality as carriers. As a well-studied subgroup of soft polymeric nanoparticles, nanogels exhibit inherent advantages due to their size and chemical compositions, allowing for passive and active targeting of diseased tissues. Moreover, nanogels loaded with therapeutic and diagnostic agents can be designed to respond to specific stimuli at the disease site, enhancing their efficacy and specificity. This capability enables fine-tuning of theranostic platforms, garnering significant clinical interest as they can be tailored for personalized treatments. The ability to monitor tumor progression in response to treatment facilitates the adaptation of therapies according to individual patient responses, highlighting the importance of designing theranostic platforms to guide clinicians in making informed treatment decisions. Consequently, the integration of therapy and diagnostics using theranostic platforms continues to advance, offering intelligent solutions to address the challenges of complex diseases such as cancer. In this context, nanogels capable of delivering therapeutic payloads and simultaneously armed with diagnostic modalities have emerged as an attractive theranostic platform. This review focuses on advances made toward the fabrication and utilization of theranostic nanogels by highlighting examples from recent literature where their performances through a combination of therapeutic agents and imaging methods have been evaluated.

近年来,人们对多功能治疗剂的兴趣与日俱增,这些治疗剂在提供治疗载荷的同时,还能促进病变部位的同步诊断成像。这种方法提供了一种综合策略,对于癌症等动态发展的疾病尤其有价值,因为治疗和诊断相结合可为治疗规划提供重要的见解。纳米级平台,特别是纳米凝胶,因其作为载体的稳定性、可调性和多功能性,已成为前景广阔的候选材料。纳米凝胶是软聚合物纳米颗粒中研究得比较透彻的一个亚类,因其尺寸和化学成分而表现出固有的优势,可以被动或主动地靶向病变组织。此外,装载了治疗和诊断药物的纳米凝胶可以设计成对疾病部位的特定刺激做出反应,从而提高其疗效和特异性。这种能力可对治疗平台进行微调,由于可为个性化治疗量身定制,因此在临床上备受关注。监测肿瘤进展对治疗反应的能力有助于根据患者的个体反应调整治疗方法,这凸显了设计治疗平台以指导临床医生做出明智治疗决策的重要性。因此,利用治疗仪平台将治疗和诊断结合在一起的技术在不断进步,为应对癌症等复杂疾病的挑战提供了智能解决方案。在这种情况下,能够提供治疗载荷并同时具有诊断模式的纳米凝胶已成为一种极具吸引力的治疗平台。本综述重点介绍治疗用纳米凝胶的制造和利用方面取得的进展,并着重举例说明最近的文献对纳米凝胶结合治疗剂和成像方法的性能进行了评估。
{"title":"Theranostic nanogels: multifunctional agents for simultaneous therapeutic delivery and diagnostic imaging.","authors":"Ismail Altinbasak, Yasin Alp, Rana Sanyal, Amitav Sanyal","doi":"10.1039/d4nr01423e","DOIUrl":"https://doi.org/10.1039/d4nr01423e","url":null,"abstract":"<p><p>In recent years, there has been a growing interest in multifunctional theranostic agents capable of delivering therapeutic payloads while facilitating simultaneous diagnostic imaging of diseased sites. This approach offers a comprehensive strategy particularly valuable in dynamically evolving diseases like cancer, where combining therapy and diagnostics provides crucial insights for treatment planning. Nanoscale platforms, specifically nanogels, have emerged as promising candidates due to their stability, tunability, and multifunctionality as carriers. As a well-studied subgroup of soft polymeric nanoparticles, nanogels exhibit inherent advantages due to their size and chemical compositions, allowing for passive and active targeting of diseased tissues. Moreover, nanogels loaded with therapeutic and diagnostic agents can be designed to respond to specific stimuli at the disease site, enhancing their efficacy and specificity. This capability enables fine-tuning of theranostic platforms, garnering significant clinical interest as they can be tailored for personalized treatments. The ability to monitor tumor progression in response to treatment facilitates the adaptation of therapies according to individual patient responses, highlighting the importance of designing theranostic platforms to guide clinicians in making informed treatment decisions. Consequently, the integration of therapy and diagnostics using theranostic platforms continues to advance, offering intelligent solutions to address the challenges of complex diseases such as cancer. In this context, nanogels capable of delivering therapeutic payloads and simultaneously armed with diagnostic modalities have emerged as an attractive theranostic platform. This review focuses on advances made toward the fabrication and utilization of theranostic nanogels by highlighting examples from recent literature where their performances through a combination of therapeutic agents and imaging methods have been evaluated.</p>","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141578325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
“Clicking” trimeric peptides onto hybrid T8POSS nanocages and identifying synthesis limitations 将三聚肽 "点击 "到混合 T8POSS 纳米笼上并确定合成限制
IF 6.7 3区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-11 DOI: 10.1039/d4nr01685h
Lewis R Anderson, Ann P Hunter, Matthew Kershaw, Sergey Y Bylikin, James Bowen, Peter Taylor, Martin Birchall, Nazia Mehrban
Macromolecule branching upon polyhedral oligomeric silsesquioxanes (POSS) via “click” chemistry has previously been reported for promoting natural biological responses in vitro, particularly when regarding thier demonstrated biocompatibility and structural robustness as potential macromolecule anchoring points. However, ”clicking” of large molecules around POSS structures uncovers two main challenges; (1) a synthetic challenge encompassing multi-covalent attachment of macromolecules to a single nanoscale-central position, and (2) purification and separation of fully adorned nanocages from those that are incomplete due to their similar physical characteristics. Here we present peptide decoration to a T8POSS nanocage through the attachment of azido-modified trimers. Triglycine- and trialanine-methyl esters “clicked” to 97% and 92% completion, respectively, resulting in 84% and 68% yields of the fully-adorned octamers. The “clicks” halt within 27-hrs of the reaction time, and efforts to further increase the octamer yield were of negligible benefit. Exploration of reaction conditions reveals multiple factors preventing full octa-arm modification to all available POSS nanocages, and offers insights into macromolecule attachment between both peptides and small organic-inorganic structures, all of which require consideration for future work of this nature.
通过 "点击 "化学将大分子分支到多面体低聚硅倍半氧烷(POSS)上,促进体外自然生物反应的研究先前已有报道,特别是将其作为潜在的大分子锚定点时所表现出的生物相容性和结构坚固性。然而,在 POSS 结构周围 "点击 "大分子发现了两个主要挑战:(1)将大分子多共价连接到单个纳米级中心位置的合成挑战,以及(2)纯化和分离完全装饰的纳米笼和由于物理特性相似而不完全装饰的纳米笼。在这里,我们介绍了通过连接叠氮修饰三聚体对 T8POSS 纳米笼进行肽装饰的方法。三甘氨酸和试卤宁甲酯的 "点击 "完成度分别为 97% 和 92%,因此完全装饰八聚体的产率分别为 84% 和 68%。点击 "在反应时间的 27 小时内停止,进一步提高八聚体产量的努力收效甚微。对反应条件的探索揭示了阻碍所有可用 POSS 纳米笼完全八臂修饰的多种因素,并为肽和小型有机-无机结构之间的大分子附着提供了见解,所有这些都需要在今后的此类工作中加以考虑。
{"title":"“Clicking” trimeric peptides onto hybrid T8POSS nanocages and identifying synthesis limitations","authors":"Lewis R Anderson, Ann P Hunter, Matthew Kershaw, Sergey Y Bylikin, James Bowen, Peter Taylor, Martin Birchall, Nazia Mehrban","doi":"10.1039/d4nr01685h","DOIUrl":"https://doi.org/10.1039/d4nr01685h","url":null,"abstract":"Macromolecule branching upon polyhedral oligomeric silsesquioxanes (POSS) via “click” chemistry has previously been reported for promoting natural biological responses in vitro, particularly when regarding thier demonstrated biocompatibility and structural robustness as potential macromolecule anchoring points. However, ”clicking” of large molecules around POSS structures uncovers two main challenges; (1) a synthetic challenge encompassing multi-covalent attachment of macromolecules to a single nanoscale-central position, and (2) purification and separation of fully adorned nanocages from those that are incomplete due to their similar physical characteristics. Here we present peptide decoration to a T8POSS nanocage through the attachment of azido-modified trimers. Triglycine- and trialanine-methyl esters “clicked” to 97% and 92% completion, respectively, resulting in 84% and 68% yields of the fully-adorned octamers. The “clicks” halt within 27-hrs of the reaction time, and efforts to further increase the octamer yield were of negligible benefit. Exploration of reaction conditions reveals multiple factors preventing full octa-arm modification to all available POSS nanocages, and offers insights into macromolecule attachment between both peptides and small organic-inorganic structures, all of which require consideration for future work of this nature.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Controllable Synthesis of Hollow Mesoporous Organosilica Nanoparticles with Pyridine-2,6-Bis-Imidazolium Frameworks for CO2 Conversion 中空介孔有机硅纳米颗粒与吡啶-2,6-双咪唑框架的可控合成,用于二氧化碳转化
IF 6.7 3区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-11 DOI: 10.1039/d4nr02144d
Ghazale Anvarian-Asl, Sadegh Joudian, Stefano Todisco, Piero Mastrorilli, Mojtaba Khorasani
A series of hard-template-derived hollow mesoporous organosilica nanoparticles (HMONs) with pyridine-2,6-bis-imidazolium frameworks have been described for the first time. As a part of the investigation, to evaluate the effects of the hard template nature, the Si/CTAB and organosilica/TEOS molar ratio, and the stepwise addition of precursors, four reaction conditions as methods A-D were designed. In the presence of polystyrene latex as a hard template, the HMONS that we wished to synthesize were not yielded with a Si/CTAB molar ratio of 3 (method A), but we could synthesize the desired HMONs with a Si/CTAB molar ratio of 9 and an organosilica:TEOS ratio of 1:99 (method B). The ratio of organosilica to TEOS could be improved up to 2.5:97.5 if the precursor additions are made in a stepwise manner rather than simultaneous additions (method C). By using sSiO2 as a hard template, yolk-shell morphology was observed by adopting a Si/CTAB molar ratio of 3 (method D). The HMONs were modified by iodide ions their activity was explored toward the coupling of CO2 with epoxides. Among the catalysts, I-HMON-L-C-2.5 exhibited excellent results under mild reaction conditions. Well-oriented pore sizes and short channel length facilitated easy mass transfer from one side and the integration of the hollow regions interior of the catalyst particles from the other side improved CO2 retention time around pores where the imidazolium organocatalysts were located, which made I-HMON-L-C-2.5 an effective catalyst for title CO2 utilization. The catalyst was reused at least six times without exhibiting any changes in activity. The HMON can be also used as a solid CNC ligand for the preparation of copper catalyst for the click reaction between phenyl acetylene and benzyl azide.
首次描述了一系列具有吡啶-2,6-双咪唑鎓框架的硬模板衍生空心介孔有机硅纳米颗粒(HMONs)。作为研究的一部分,为了评估硬模板性质、Si/CTAB 和有机硅/TEOS 摩尔比以及逐步添加前驱体的影响,设计了 A-D 四种反应条件。在有聚苯乙烯胶乳作为硬模板的情况下,Si/CTAB 摩尔比为 3(方法 A)时,我们无法合成想要的 HMONS,但 Si/CTAB 摩尔比为 9、有机硅与 TEOS 的比例为 1:99(方法 B)时,我们可以合成想要的 HMONS。如果前驱体不是同时加入,而是逐步加入,则有机硅与 TEOS 的比例可提高到 2.5:97.5(方法 C)。使用 sSiO2 作为硬模板,Si/CTAB 摩尔比为 3 时,可观察到蛋黄壳形态(方法 D)。通过碘离子对 HMONs 进行修饰,探索了它们在 CO2 与环氧化物偶联方面的活性。在这些催化剂中,I-HMON-L-C-2.5 在温和的反应条件下表现出优异的性能。良好的孔径和较短的通道长度便于从一侧进行传质,而催化剂颗粒内部中空区域的整合则从另一侧改善了咪唑有机催化剂所在孔隙周围的二氧化碳滞留时间,这使得 I-HMON-L-C-2.5 成为一种有效的标题二氧化碳利用催化剂。该催化剂可重复使用至少六次,其活性未发生任何变化。HMON 还可用作固体 CNC 配体,用于制备苯基乙炔和叠氮苯甲酰肼点击反应的铜催化剂。
{"title":"Controllable Synthesis of Hollow Mesoporous Organosilica Nanoparticles with Pyridine-2,6-Bis-Imidazolium Frameworks for CO2 Conversion","authors":"Ghazale Anvarian-Asl, Sadegh Joudian, Stefano Todisco, Piero Mastrorilli, Mojtaba Khorasani","doi":"10.1039/d4nr02144d","DOIUrl":"https://doi.org/10.1039/d4nr02144d","url":null,"abstract":"A series of hard-template-derived hollow mesoporous organosilica nanoparticles (HMONs) with pyridine-2,6-bis-imidazolium frameworks have been described for the first time. As a part of the investigation, to evaluate the effects of the hard template nature, the Si/CTAB and organosilica/TEOS molar ratio, and the stepwise addition of precursors, four reaction conditions as methods A-D were designed. In the presence of polystyrene latex as a hard template, the HMONS that we wished to synthesize were not yielded with a Si/CTAB molar ratio of 3 (method A), but we could synthesize the desired HMONs with a Si/CTAB molar ratio of 9 and an organosilica:TEOS ratio of 1:99 (method B). The ratio of organosilica to TEOS could be improved up to 2.5:97.5 if the precursor additions are made in a stepwise manner rather than simultaneous additions (method C). By using sSiO2 as a hard template, yolk-shell morphology was observed by adopting a Si/CTAB molar ratio of 3 (method D). The HMONs were modified by iodide ions their activity was explored toward the coupling of CO2 with epoxides. Among the catalysts, I-HMON-L-C-2.5 exhibited excellent results under mild reaction conditions. Well-oriented pore sizes and short channel length facilitated easy mass transfer from one side and the integration of the hollow regions interior of the catalyst particles from the other side improved CO2 retention time around pores where the imidazolium organocatalysts were located, which made I-HMON-L-C-2.5 an effective catalyst for title CO2 utilization. The catalyst was reused at least six times without exhibiting any changes in activity. The HMON can be also used as a solid CNC ligand for the preparation of copper catalyst for the click reaction between phenyl acetylene and benzyl azide.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A novel nitrogen-doped carbon-coated SnSe2 based on post-synthetic modified MOF as high-performance anode materials for lithium-ion batteries and sodium-ion batteries 基于后合成修饰 MOF 的新型氮掺杂碳涂层 SnSe2 作为锂离子电池和钠离子电池的高性能负极材料
IF 6.7 3区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-11 DOI: 10.1039/d4nr02418d
Zhiyuan Chen, Zhe Zhang, Longzhen Wang, Yifei Li, Yiting Wang, Yichuan Rui, Ailing Song, Min Li, Yinyu Xiang, Kaibin Chu, Lei Jiang, Bohejin Tang, Ning Han, Guoxiu Wang, Hao Tian
SnSe2 with high theoretical capacity has been identified as an emerging anode candidate for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs). However, the rate and cycling performance of this material in practical applications is still limited by unavoidable volume expansion and low conductivity. In this paper, Sn-MOF was modified using 2-aminoterephthalic acid (C8H7NO4) to replace solvent sites in MOF clusters to improve electrochemical stability, for improving conductivity heat-treated with selenium powder to synthesize nitrogen-doped carbon-coated SnSe2/C-N composites. The inherited carbon skeleton from Sn-MOF precursor can alleviate the volume expansion of SnSe2/C-N during cycling. N-doping in Sn-MOF can increase the positive and negative electrostatic potential energy regions on the molecular surface to further improve the electrical conductivity, and effectively reduce the binding energy with Li+/Na+ which obtained by Density Functional theory (DFT) methods. In addition, N-doping carbon skeleton also introduces a larger space for Li+/Na+ intercalation and enhance the mechanical properties. In particular, the post-synthesis modified MOF-derived SnSe2/C-N materials exhibit excellent cyclability, with a reversible capacity of 695 mAh·g-1 for LIB and 259 mAh·g-1 for SIB after 100 cycles at 100 mA·g-1.
具有高理论容量的 SnSe2 已被确定为锂离子电池(LIB)和钠离子电池(SIB)的新兴负极候选材料。然而,这种材料在实际应用中的速率和循环性能仍然受到不可避免的体积膨胀和低电导率的限制。本文使用 2-aminoterephthalic acid (C8H7NO4) 对 Sn-MOF 进行改性,以取代 MOF 簇中的溶剂位点,从而提高电化学稳定性;为了提高导电性,还使用硒粉进行热处理,合成了氮掺杂的碳包覆 SnSe2/C-N 复合材料。从 Sn-MOF 前驱体中继承的碳骨架可以缓解 SnSe2/C-N 在循环过程中的体积膨胀。在 Sn-MOF 中掺入 N 可以增加分子表面的正负静电势能区,从而进一步提高导电性,并有效降低与 Li+/Na+ 的结合能,这是由密度泛函理论(DFT)方法得到的。此外,掺杂 N 的碳骨架还为 Li+/Na+ 插层引入了更大的空间,从而提高了力学性能。特别是,合成后修饰的 MOF 衍生 SnSe2/C-N 材料表现出优异的循环能力,在 100 mA-g-1 的条件下循环 100 次后,LIB 的可逆容量为 695 mAh-g-1,SIB 的可逆容量为 259 mAh-g-1。
{"title":"A novel nitrogen-doped carbon-coated SnSe2 based on post-synthetic modified MOF as high-performance anode materials for lithium-ion batteries and sodium-ion batteries","authors":"Zhiyuan Chen, Zhe Zhang, Longzhen Wang, Yifei Li, Yiting Wang, Yichuan Rui, Ailing Song, Min Li, Yinyu Xiang, Kaibin Chu, Lei Jiang, Bohejin Tang, Ning Han, Guoxiu Wang, Hao Tian","doi":"10.1039/d4nr02418d","DOIUrl":"https://doi.org/10.1039/d4nr02418d","url":null,"abstract":"SnSe2 with high theoretical capacity has been identified as an emerging anode candidate for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs). However, the rate and cycling performance of this material in practical applications is still limited by unavoidable volume expansion and low conductivity. In this paper, Sn-MOF was modified using 2-aminoterephthalic acid (C8H7NO4) to replace solvent sites in MOF clusters to improve electrochemical stability, for improving conductivity heat-treated with selenium powder to synthesize nitrogen-doped carbon-coated SnSe2/C-N composites. The inherited carbon skeleton from Sn-MOF precursor can alleviate the volume expansion of SnSe2/C-N during cycling. N-doping in Sn-MOF can increase the positive and negative electrostatic potential energy regions on the molecular surface to further improve the electrical conductivity, and effectively reduce the binding energy with Li+/Na+ which obtained by Density Functional theory (DFT) methods. In addition, N-doping carbon skeleton also introduces a larger space for Li+/Na+ intercalation and enhance the mechanical properties. In particular, the post-synthesis modified MOF-derived SnSe2/C-N materials exhibit excellent cyclability, with a reversible capacity of 695 mAh·g-1 for LIB and 259 mAh·g-1 for SIB after 100 cycles at 100 mA·g-1.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Nanoscale
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1