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Mechanofluorochromism with Aggregation-Induced Emission (AIE) Characteristics: A Perspective Applying Isotropic and Anisotropic Force
Topics in Current Chemistry ( IF 7.1 ) Pub Date : 2021-06-09 , DOI: 10.1007/s41061-021-00341-x
Vishal Kachwal , Inamur Rahaman Laskar

Organic mechanofluorochromic (MFC) materials (that change their emission under anisotropic and isotropic pressure) have attracted a great attention in recent years due to their promising applications in sensing pressure, storage devices, security inks, three-dimensional (3D) printing, etc. Stimuli-responsive organic materials with aggregation-induced emission (AIE) characteristics would be an interesting class of materials to enrich the chemistry of MFC compounds. A diamond anvil cell (DAC) is a small tool that is employed to generate high and uniform pressure on materials over a small area. This article discusses the relationship between the chemical structure of AIE compounds and the change in emission properties under anisotropic (mechanical grinding) and isotropic (hydrostatic) pressure. The luminescent properties of such materials depend on the molecular rearrangement in the lattice, conformational changes, excited state transitions and weak intermolecular interactions. Hence, studying the change in luminescent property of these compounds under varying pressure will provide a deeper understanding of the excited-state properties of various emissive compounds with stress. The development of such materials and studies into the effect of pressure on their luminescence properties are summarized.



中文翻译:

具有聚集诱导发射 (AIE) 特性的机械荧光变色:应用各向同性和各向异性力的视角

有机氟致变色(MFC)材料(在各向异性和各向同性压力下改变其发射)近年来因其在传感压力、存储设备、安全油墨、三维(3D)打印等方面的有前景的应用而引起了极大的关注。具有聚集诱导发射 (AIE) 特性的刺激响应有机材料将是一类有趣的材料,可丰富 MFC 化合物的化学性质。金刚石砧座 (DAC) 是一种小型工具,用于在小区域内对材料产生高且均匀的压力。本文讨论了 AIE 化合物的化学结构与在各向异性(机械研磨)和各向同性(流体静力)压力下发射特性变化之间的关系。这种材料的发光特性取决于晶格中的分子重排、构象变化、激发态跃迁和弱分子间相互作用。因此,研究这些化合物在不同压力下发光特性的变化,将有助于更深入地了解各种具有应力的发光化合物的激发态特性。总结了此类材料的发展以及压力对其发光特性影响的研究。

更新日期:2021-06-09
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