具有聚集诱导发光效应的聚炔材料的合成及光学性能研究  

Polyynes with Aggregation-Induced Emission Characteristics:Synthesis and Their Photonic Properties

作　　者：韩婷[1,2] 詹嘉慧[1,2] 林荣业[1,2] 唐本忠[1,2] 

机构地区：[1]香港科技大学化学系国家人体组织功能重建工程技术研究中心香港分中心 [2]香港科技大学深圳研究院,深圳518057

出　　处：《化学学报》2016年第11期877-884,共8页Acta Chimica Sinica

基　　金：国家基础研究发展规划项目(973项目;2013CB834701;2013CB834702);香港大学教育资助委员会(Ao E/P-03/08);国家自然科学基金(21490570和21490574);香港研究资助局(604913;16305014;16303815);创新科技署(ITC-CNERC14S01)资助;广东省创新科研团队项目(201101C0105067115)资助~~

摘　　要：合成了三种含有四苯基乙烯结构的双炔烃．这些双炔烃单体通过在CuCl催化下在邻二氯苯中进行的均聚反应可以高产率地生成线型聚炔．所得聚合物均可很好地溶解于常见有机溶剂中，并具有很高的热稳定性．这类聚炔材料在溶液态时几乎不发光，但在聚集态或者固态下可高度发光，表现出典型的聚集诱导发光性质．同时，这些聚合物具有高透光性，可以允许整个可见光区的光透过．其薄膜在4001700nm宽波长范围内表现出高折射率（n=1．7787-1．6543）和低色差（D＇=0．0003）．紫外光照射可诱使聚合物薄膜发生交联过程，从而调控其折射率数值，并可生成高分辨率的荧光图案．Tetraphenylethene-containing diacetylenes are synthesized and their homopolymerizations are catalyzed by CuCl in o-dichlorobenzene, furnishing linear polyynes in high isolated yields. All polymers possess good solubility in common organic solvents and enjoy high thermal stability. Whereas they are practically non-emissive when molecularly dissolved in good solvents, they become highly emissive when aggregated as nanoparticle suspensions in poor solvents or fabricated into thin films in the solid state, demonstrating a novel phenomenon of aggregation-induced emission. The polymers are highly transparent, allowing almost all light in the entire visible spectral region to transmit through. Thin films of the polymers show high refractive indices （n= 1.7787- 1.6543） in the wavelength region of 400- 1700 nm and very low chromatic aberrations （D＇=0.0003）. Their n values can be modulated and their thin films can be crosslinked by UV irradiation, generating fluores- cent patterns with high resolutions.

关 键 词：线型聚炔 聚集诱导发光 四苯基乙烯 折射率 

分 类 号：O632.17[理学—高分子化学]