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Multistimuli Response and Polymorphism of a Novel Tetraphenylethylene Derivative

机译：新型四苯乙烯衍生物的多刺激响应和多态性

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摘要

Multi-stimuli-responsive fluorescent molecule tetraphenylethylene (TPE) derivative 1 is synthesized, which contains a TPE skeleton and peripheries of two methoxyl groups and one carboxyl group. It shows a typical aggregation-induced emission behavior and also exhibits fluorescence responses to pH change and amine vapors, and multicolored mechanochromic properties. The emission of 1 can be reversibly switched among blue (1p-f, 462 nm, Phi(f) = 7.4%), bright cyan (1p-h, 482 nm, Phi(f) = 82.3%), and yellow (1p-g, 496 nm, Phi(f) = 10.5%) with high contrast through solvent fuming, heating, or grinding. Molecule 1 occurs in four crystalline states (1c-a, 1c-b, 1c-c, and 1c-d) after crystallization from different solvents. The multicolored mechanochromic property is related to the different interactions and packing modes of molecules in the crystals. The crystals with weak fluorescent emission have characteristic porous structures and corresponding intensive XRD diffraction peaks, which are absent in the crystal with intensive fluorescent emission. The porous structures are critical for the fluorescence intensity of the molecules. Upon heating, the porous structures of crystals are damaged and fluorescence is significantly enhanced.
机译：合成了多刺激响应性荧光分子四苯乙烯（TPE）衍生物1，它包含TPE骨架和两个甲氧基和一个羧基的周边。它显示出典型的聚集诱导的发射行为，并且还表现出对pH值变化和胺蒸气的荧光响应，以及多色的机械变色特性。 1的发射可以在蓝色（1p-f，462 nm，Phi（f）= 7.4％），明亮的青色（1p-h，482 nm，Phi（f）= 82.3％）和黄色（1p -g，496 nm，Phi（f）= 10.5％），通过溶剂发烟，加热或研磨获得高对比度。从不同溶剂中结晶后，分子1以四种结晶态（1c-a，1c-b，1c-c和1c-d）出现。多彩多姿的机械变色特性与晶体中分子的不同相互作用和堆积方式有关。具有弱荧光发射的晶体具有特征性的多孔结构和相应的强XRD衍射峰，在强荧光发射的晶体中不存在。多孔结构对于分子的荧光强度至关重要。加热时，晶体的多孔结构被破坏，荧光显着增强。

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  • 来源
    《Advanced Functional Materials》 |2019年第16期|1900516.1-1900516.9|共9页
  • 作者

    Huang Guangxi; Jiang Yuqing; Yang Sifen; Li Bing Shi; Tang Ben Zhong;

  • 作者单位

    Shenzhen Univ, Coll Chem & Environm Engn, Key Lab New Lithium Ion Battery & Mesoporous Mat, 1066 Xueyuan Ave, Shenzhen 518055, Peoples R China|HKUST Shenzhen Res Inst, South Area, 9 Yuexing 1st RD,Hitech Pk, Shenzhen 518057, Peoples R China;

    Shenzhen Univ, Coll Chem & Environm Engn, Key Lab New Lithium Ion Battery & Mesoporous Mat, 1066 Xueyuan Ave, Shenzhen 518055, Peoples R China;

    Fudan Univ, Sch Pharm, 826 Zhangheng Rd,Zhangjiang Hitech Pk, Shanghai 201203, Peoples R China;

    Shenzhen Univ, Coll Chem & Environm Engn, Key Lab New Lithium Ion Battery & Mesoporous Mat, 1066 Xueyuan Ave, Shenzhen 518055, Peoples R China;

    HKUST Shenzhen Res Inst, South Area, 9 Yuexing 1st RD,Hitech Pk, Shenzhen 518057, Peoples R China|Hong Kong Univ Sci & Technol, Ctr Tissue Restorat & Reconstruct, Hong Kong Branch Chinese Natl Engn Res, Dept Chem,Kowloon, Clear Water Bay, Hong Kong 999077, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    luminescence; mechanochromism; multi-stimuli-responsive; polymorphism; sensor;

    机译：发光;机械变色;多刺激响应;多态性;传感器;

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