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Recent advances in organic pressure-responsive luminescent materials

Chinese Chemical Letters 2019年第11期30卷 1883-1894页

作者： Zhiyuan Fu Kai Wang Bo Zou State Key Laboratory of Superhard Materials College of PhysicsJilin University

Organic luminescent materials are very sensitive to external stimuli,such as pressure,temperature,and electric field.The luminescent properties of some organic luminescent materials significantly change under high pressure.Some materials may show luminescence discoloration,whereas some may exhibit luminescence enhancement.These properties have many potential applications in anticounterfeiting,force sensor,data recording and storage,and luminescent devices,thereby greatly attracting the attention of scientists.In this review,the progress of research on these materials at high pressure in recent years is summarized.

关键词： Pressure-responsive piezochromic Diamond anvil cell Pressure-induced enhanced emission Organic luminescent

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Thiomethyl Derivatives of Two Oligo(p-phenylene vinylenes) as New Aggregation-Induced Piezofluorochromic Emitters

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Materials Sciences and Applications 2013年第6期4卷 331-336页

作者： Xueqing Hou Jing Ling Navamoney Arulsamy Jianqiang Huo Department of Chemistry University of Wyoming Laramie USA Key Laboratory of Eco-Environment Related Polymer Materials of Ministry of Education Key Laboratory of Polymer Materials of Gansu Province College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou China

Two piezochromic fluorescent compounds are prepared by introducing thiomethyl substituents to the peripheralpositions of two related cyano oligo(p-phenylene vinylenes) (CN-OPV). The new derivatives, namely, 1,4-bis[2-cyano-2(4-thiomethylphenyl)ethenyl]benzene (TOPV1) and 1,4-bis(1-cyano-2-(4-thiomethylphenyl)ethenyl) benzene (TOPV2), are characterized by NMR, powder X-ray diffraction data (XRD) and differential scanning calorimetric (DSC) data. UV-Vis and fluorescence spectra are also measured. TOPV1 with the cyano groups farther away from the central aromatic ring is photoluminescent, and on application of pressure exhibits a more obvious color change and higher Stokes shift than those measured for TOPV2. We also observe piezochromic aggregation-induced emission (PAIE) for TOPV2, but TOPV1 does not exhibit any PAIE.

关键词： Aggregation Induced Emission (AIE) piezochromic Fluorophore Excimer Fluorescence

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