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Modulation of Fe-Fe distance and spin in diiron complexes using tetradentate ligands with different flanking donors. 使用具有不同侧翼供体的四价配体调节二铁配合物中的铁-铁距离和自旋。
IF 4.3 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-19 DOI: 10.1039/d4cc02522a
Kyle D Spielvogel, Emily J Campbell, Sabyasachi Roy Chowdhury, Florian Benner, Selvan Demir, Gillian P Hatzis, Hayley R Petras, Dunya Sembukuttiarachchige, James J Shepherd, Christine M Thomas, Bess Vlaisavljevich, Scott R Daly

Here we report the synthesis and characterization of diiron complexes containing triaryl N4 and N2S2 ligands derived from o-phenylenediamine. The complexes display significant differences in Fe-Fe distances and magnetic properties that depend on the identity of the flanking NMe2 and SMe donor groups.

在此,我们报告了含有邻苯二胺衍生的三芳基 N4 和 N2S2 配体的二铁配合物的合成和表征。这些配合物在铁-铁距离和磁性方面显示出明显的差异,这取决于侧翼 NMe2 和 SMe 供体基团的特性。
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引用次数: 0
Photon-gated foldaxane assembly/disassembly. 光子门控折叠酶组装/拆卸。
IF 4.3 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-19 DOI: 10.1039/d4cc03218g
Chenhao Yao, Bappaditya Gole, Anh Thy Bui, Brice Kauffmann, Ivan Huc, Nathan D McClenaghan, Yann Ferrand

Integrating multiple anthracene motifs into aromatic oligoamide sequences gives rise to photoactive foldamers that can sequester a molecular thread forming helix-on-axle assemblies. Photoirradiation is shown to distort the helical host and drive dissociation of the supramolecular assembly and thread liberation as signalled by a photonic output, while thermal reversion regenerates the assembly.

在芳香族低聚酰胺序列中整合多个蒽基序,可产生光活性折叠体,这种折叠体可封存分子线,形成轴上螺旋组装体。研究表明,光照射会扭曲螺旋主链,并通过光子输出信号驱动超分子组装体解离和线程释放,而热还原则会使组装体再生。
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引用次数: 0
Contributors to the Pioneering Investigators Collection 2024: Part 1. 为《2024 年先锋调查员文集》供稿:第 1 部分.
IF 4.3 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-18 DOI: 10.1039/d4cc90213k
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引用次数: 0
Incorporation of CF3-pseudoprolines into polyproline type II foldamers confers promising biophysical features 将 CF3-假脯氨酸掺入聚脯氨酸 II 型折叠体可赋予其良好的生物物理特性
IF 4.9 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-17 DOI: 10.1039/d4cc02895c
Chloé Cayrou, Astrid Walrant, Delphine Ravault, Karine Guitot, Sylvie Noinville, Sandrine Sagan, Thierry Brigaud, Simon Gonzalez, Sandrine Ongeri, Grégory Chaume
The development and the use of fluorinated polyproline-type II (PPII) foldamers are still underexplored. Herein, trifluoromethyl pseudoprolines have been incorporated into polyproline backbones without affecting their PPII helicity. The ability of the trifluoromethyl groups to increase hydrophobicity and to act as 19F NMR probes is demonstrated. Moreover, the enzymatic stability and the non-cytotoxicity of these fluorinated foldamers make them valuable templates for their use in medicinal chemistry.
含氟多脯氨酸 II 型(PPII)折叠剂的开发和使用仍未得到充分探索。在这里,三氟甲基假脯氨酸被加入到聚脯氨酸骨架中,而不会影响其 PPII 螺旋性。三氟甲基基团能够增加疏水性并作为 19F NMR 探针。此外,这些含氟折叠物的酶稳定性和无细胞毒性使它们成为药物化学中的宝贵模板。
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引用次数: 0
Transglutaminase-mediated proximity labeling of a specific Lys residue in a native IgG antibody 转谷氨酰胺酶介导的原生 IgG 抗体中特定 Lys 残基的近距离标记
IF 4.9 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-17 DOI: 10.1039/d4cc01728e
Riko Nishioka, Ryuya Iida, Kosuke Minamihata, Ryo Sato, Michio Kimura, Noriho Kamiya
The fusion protein of an engineered zymogen of microbial transglutaminase (EzMTG) with a protein G variant, EzMTG-pG, enabled the proximity-based, tag-free labeling of Lys65 in the heavy chain of a native IgG antibody (trastuzumab) with a Gln-donor peptidyl substrate functionalized with a fluorescent molecule.
微生物转谷氨酰胺酶的工程酶原(EzMTG)与蛋白 G 变体(EzMTG-pG)的融合蛋白实现了对原生 IgG 抗体(曲妥珠单抗)重链中的 Lys65 进行基于近距离的无标记标记,标记基质为 Gln 供体的肽基,并带有荧光分子功能。
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引用次数: 0
Biomimetic hierarchical porous high entropy alloy for significantly enhancing overall seawater splitting. 仿生分层多孔高熵合金,显著提高海水的整体分裂能力。
IF 4.3 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-17 DOI: 10.1039/d4cc01502a
Wei Wang, Weiqi Wang, Jun Cheng, Xing Lu, Yunzhuo Lu

Herein, a biomimetic hierarchical porous high entropy alloy (BHP-HEA) is prepared by a strategy combining selective laser melting and selective phase dissolution. It exhibited excellent seawater splitting performance, which only needs a low potential of 1.53 V to realize a current density of 100 mA cm-2, with exceptional stability.

本文采用选择性激光熔化和选择性相溶解相结合的策略,制备了一种仿生物分层多孔高熵合金(BHP-HEA)。它具有优异的海水分光性能,只需 1.53 V 的低电位即可实现 100 mA cm-2 的电流密度,且稳定性极佳。
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引用次数: 0
Synthesis of a highly conductive coordination polymers film via a vapor-solid phase chemical conversion process 通过气固相化学转化工艺合成高导电性配位聚合物薄膜
IF 4.9 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-17 DOI: 10.1039/d4cc02433h
Ze Li, Yigang Jin, Chunlei Li, Zixin Chang, Sha Wu, Yimeng Sun, Lang Jiang, Wei Xu
Conductive coordination polymers (c-CPs) that possess excellent electrical conductivities and charge carrier mobilities offer exciting prospects for the development of electronic devices.In this study, we propose a novel vapor-solid phase chemical conversion process to fabricate high-quality films of the conductive coordination polymer Ag5BHT (BHT = benzenehexanothiolate). This approach involves reacting a metal oxide precursor and an organic linker in an organic solvent vapor atmosphere to obtain Ag5BHT thin films with controllable thickness(100-300nm). The as-synthesized Ag5BHT thin films exhibit conductivity as high as 10 S cm−1. Additionally, under field-effect modulation, these nanofilms demonstrate remarkably high charge mobility (38 cm2 v-1 s-1), indicating promising potential for electronic device fabrication.
导电配位聚合物(c-CPs)具有优异的导电性和电荷载流子迁移率,为电子器件的开发提供了令人振奋的前景。在本研究中,我们提出了一种新型气固相化学转化工艺,用于制造导电配位聚合物 Ag5BHT(BHT = 苯并己硫酸盐)的高质量薄膜。这种方法包括在有机溶剂气相气氛中使金属氧化物前体和有机连接剂发生反应,从而获得厚度可控(100-300nm)的 Ag5BHT 薄膜。合成的 Ag5BHT 薄膜具有高达 10 S cm-1 的导电性。此外,在场效应调制条件下,这些纳米薄膜显示出极高的电荷迁移率(38 cm2 v-1 s-1),表明其在电子器件制造方面具有广阔的应用前景。
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引用次数: 0
A Naphthalimide-Based Fluorescent Platform for Endoplasmic Reticulum Targeted Imaging 基于萘二甲酰亚胺的内质网靶向成像荧光平台
IF 4.9 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-17 DOI: 10.1039/d4cc02882a
Yiwei Li, Nan Zhang, Yan Wang, Shanshan Lu, Jing Sheng, Xiangjun Liu, Yongbiao Wei, Dihua Shangguan
A series of naphthalimide dyes (TRNATR, MOTNAMOT, MPNAMP, TYNATY, PNAP and IZNAIZ) were designed and synthesized by altering the side chains of the naphthalimide. Without the need of the ER-targeting groups, the first five dyes were found to specifically target the ER, likely due to their well-suited lipophilic properties. Furthermore, TRNATR and TYNATY were proven effective for studying ER stress, showing promise in tracking ER autophagy in living cells triggered by tunicamycin and nutritional starvation.
通过改变萘二甲酰亚胺的侧链,设计并合成了一系列萘二甲酰亚胺染料(TRNATR、MOTNAMOT、MPNAMP、TYNATY、PNAP 和 IZNAIZ)。在不需要ER靶向基团的情况下,发现前五种染料都能特异性地靶向ER,这可能是由于它们具有良好的亲脂性。此外,TRNATR 和 TYNATY 被证明可有效研究 ER 应激,在追踪由曲奈霉素和营养饥饿引发的活细胞中 ER 自噬方面大有可为。
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引用次数: 0
Continuous Covalent Organic Framework Membrane as Artificial Solid Electrolyte Interphase for Lithium Metal Anode 连续共价有机框架膜作为锂金属负极的人工固体电解质间相
IF 4.9 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-17 DOI: 10.1039/d4cc02480j
Tae Jeong Kim, Xing Li, Fangzheng Chen, Yayuan Liu
Lithium (Li) metal is a promising next-generation anode material, but it suffers from dendrite growth and unstable solid electrolyte interphase (SEI). We developed a robust and continuous self-standing covalent organic framework (COF) membrane using a same-phase synthesis method and utilized the membrane as an artificial SEI. The membrane suppressed dendrite growth and enhanced the stability and longevity of Li metal anode cycling.
金属锂(Li)是一种很有前途的下一代负极材料,但它存在枝晶生长和固体电解质相间层(SEI)不稳定的问题。我们采用同相合成法开发了一种坚固且连续的自立共价有机框架(COF)膜,并将该膜用作人工 SEI。该膜抑制了枝晶的生长,提高了锂金属阳极循环的稳定性和寿命。
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引用次数: 0
An Anchor for Help: A Cross-linking Moiety for Block Copolymer Membrane Stabilization for Ultrafiltration Applications in Water 帮助之锚:用于水领域超滤应用的嵌段共聚物膜稳定交联分子
IF 4.9 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-07-17 DOI: 10.1039/d4cc02165g
Florian Frieß, Markus Gallei
Block copolymer membranes are an exciting class of materials to separate small contaminants from water. Covalently cross-linking of the membrane matrix is one approach to alleviate stability issues, which limit their application nowadays. In the current work, membranes from amphiphilic block copolymers are manufactured and cross-linked using a UV-active radical initiator moiety.
嵌段共聚物膜是一类令人兴奋的材料,可用于分离水中的微小污染物。膜基质的共价交联是缓解稳定性问题的一种方法,这些问题限制了它们在当今的应用。在目前的工作中,使用紫外线活性自由基引发剂制造并交联了两亲嵌段共聚物膜。
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引用次数: 0
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Chemical Communications
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