Acta Chim. Sinica ›› 2016, Vol. 74 ›› Issue (11): 877-884.DOI: 10.6023/A16070348 Previous Articles     Next Articles



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
  • 投稿日期:2016-07-16 发布日期:2016-08-24
  • 通讯作者: 林荣业, 唐本忠;
  • 基金资助:


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 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).

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