Two-Photon Excited Fluorescence of Tetraphenylethylene-Based Metal–Organic Frameworks under Pressure with Different Ligand Arm Lengths

IF 7.1 2区材料科学 Q2 CHEMISTRY, PHYSICAL Chemistry of Materials Pub Date : 2026-10-13 Epub Date: 2026-09-15 DOI:10.1021/acs.chemmater.6c01120

Jun-Zhe Dong, Qiang-Sheng Zhang, Shi-Cheng Wang, Rui-Qi Huang, Lin Zheng, Xue-Cui Jiang, Ya-Nan Fan, Zheng Wang, Mei Pan

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Abstract

Metal–organic frameworks (MOFs) with excellent two-photon excited fluorescence (TPEF) properties have shown great potential in multiple fields. While numerous pressure-responsive TPEF MOFs have been reported, the precise modulation of their optical performance via structural design remains a critical challenge. In this study, the impact of ligand coordination arm length on the TPEF properties of tetraphenylethylene-based MOFs (TPE-MOFs) was systematically explored. By designing two TPE-MOFs with varying coordination arm lengths, it was demonstrated that LIFM-DJZ-1, based on L1 with long coordination arms, exhibited superior PLQY and TPA action cross sections compared to LIFM-DJZ-2 with shortened L2. Notably, pressure stimulation further enhanced the TPEF performance of LIFM-DJZ-1, highlighting the potential of structural modulation in designing high-performance piezofluorochromic materials. This study not only offers fresh insights into the structure-property relationship in TPE-MOFs but also establishes a crucial foundation and practical guideline for advancing the development of high-performance TPE-MOF materials.

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不同配体臂长压力下四苯乙烯基金属-有机骨架的双光子激发荧光

金属有机骨架（MOFs）具有优异的双光子激发荧光（TPEF）性能，在多个领域显示出巨大的潜力。虽然已经报道了许多压力响应型TPEF mof，但通过结构设计精确调制其光学性能仍然是一个关键挑战。本研究系统探讨了配位臂长度对四苯乙烯基mfs (tpe - mfs) TPEF性能的影响。通过设计两种不同协调臂长度的tpe - mof，结果表明，与缩短协调臂长度的LIFM-DJZ-2相比，基于长协调臂L1的LIFM-DJZ-1具有更好的PLQY和TPA作用截面。值得注意的是，压力刺激进一步提高了LIFM-DJZ-1的TPEF性能，突出了结构调制在设计高性能压电致荧光材料中的潜力。该研究不仅对TPE-MOF的结构-性能关系提供了新的认识，而且为推进高性能TPE-MOF材料的发展奠定了重要的基础和实践指导。

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来源期刊

Chemistry of Materials 工程技术-材料科学：综合

CiteScore

14.10

自引率

5.80%

发文量

929

审稿时长

1.5 months

期刊介绍： The journal Chemistry of Materials focuses on publishing original research at the intersection of materials science and chemistry. The studies published in the journal involve chemistry as a prominent component and explore topics such as the design, synthesis, characterization, processing, understanding, and application of functional or potentially functional materials. The journal covers various areas of interest, including inorganic and organic solid-state chemistry, nanomaterials, biomaterials, thin films and polymers, and composite/hybrid materials. The journal particularly seeks papers that highlight the creation or development of innovative materials with novel optical, electrical, magnetic, catalytic, or mechanical properties. It is essential that manuscripts on these topics have a primary focus on the chemistry of materials and represent a significant advancement compared to prior research. Before external reviews are sought, submitted manuscripts undergo a review process by a minimum of two editors to ensure their appropriateness for the journal and the presence of sufficient evidence of a significant advance that will be of broad interest to the materials chemistry community.