化学学报 ›› 2016, Vol. 74 ›› Issue (11): 877-884.DOI: 10.6023/A16070348 上一篇    下一篇

研究论文

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

韩婷a,b, 詹嘉慧a,b, 林荣业a,b, 唐本忠a,b   

  1. a 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 香港九龙清水湾;
    b 香港科技大学深圳研究院 深圳 518057
  • 收稿日期:2016-07-16 出版日期:2016-11-15 发布日期:2016-08-24
  • 通讯作者: 林荣业, 唐本忠 E-mail:chjacky@ust.hk;tangbenz@ust.hk
  • 基金资助:

    项目受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(AoE/P-03/08),国家自然科学基金(21490570和21490574),香港研究资助局(604913,16305014,16303815)及创新科技署(ITC-CNERC14S01)资助.同时感谢广东省创新科研团队项目(201101C0105067115)资助.

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

Han Tinga,b, Cathy K. W. Jima,b, Jacky W. Y. Lama,b, Tang Ben Zhonga,b   

  1. a Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute for Advanced Study, Institute of Molecular Functional Materials, Division of Biomedical Engineering, Division of Life Science and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China;
    b HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan, Shenzhen 518057, China
  • Received:2016-07-16 Online:2016-11-15 Published:2016-08-24
  • Supported by:

    Project supported by the National Basic Research Program of China (973 Program; 2013CB834701, 2013CB834702), the University Grants Committee of Hong Kong (AoE/P-03/08), the National Natural Science Foundation of China (21490570, 21490574), the Research Grants Council of Hong Kong (604913, 16305014 and 16303815), and the Innovation and Technology Commission (ITC-CNERC14S01). B.Z.T. thanks the support of the Guangdong Innovative Research Team Program (201101C0105067115).

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400~1700 nm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.

关键词: 线型聚炔, 聚集诱导发光, 四苯基乙烯, 折射率

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 fluorescent patterns with high resolutions.

Key words: linear polyynes, aggregation-induced emission, tetraphenylethene, refractive index