聚集诱导发光_现象_机理和应用

PL-003
聚集诱导发光：现象、机理和应用
唐本忠
香港科技大学化学系，九龙，香港；浙江大学高分子科学与工程学系，杭州 310027
E-mail: tangbenz@ust.hk
传统观念认为生色团的聚集将导致荧光猝灭。

与之截然相反，聚集诱导发光（AIE）是指一类在溶液中不发光的分子在聚集态发光的现象。

本报告将讲述我们是如何发现AIE现象和怎样提出分子内旋转受限是导致AIE现象的机理假设的研究过程，并总结在基于机理理解的基础上，如何发展多种涵盖整个可见光范围的发光效率高达100%的荧光和磷光AIE分子，以及怎样将这些小分子转化成具有AIE特性的高分子。

我们还将讨论这些AIE小分子及聚合物的特殊功能和应用前景。

关键词：聚集诱导发光；分子内旋转受限；固态聚集；功能高分子材料。

参考文献
[1] J. Luo, Z. Xie, J. W. Y. Lam, L. Cheng, H. Chen, C. Qiu, H. S. Kwok, X. Zhan, Y. Liu, D. Zhu, and B. Z.
Tang, Chem. Commun. 2001, 1740–1741.
[2] Y. Hong, J. W. Y. Lam, and B. Z. Tang, Chem. Commun. 2009, 4332–4353.
[3] J. Liu, J. W. Y. Lam, and B. Z. Tang, J. Inorg. Organomet. Polym. Mater.2009, 19, 249–285.
[4] J. Liu, J. W. Y. Lam, and B. Z. Tang, Chem. Rev.2009, 109, 5799–5867.
Aggregation-Induced Emission: Phenomenon, Mechanism and
Applications
Ben Zhong Tang
Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, and Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027 Chromophore aggregation generally quenches light emission. Aggregation-induced emission (AIE) refers to an opposite phenomenon that luminogens non-emissive in the solution state are induced to emit efficiently when they are aggregated. In this talk, I will give a brief account on how we have discovered the AIE phenomenon and identified the restriction of intramolecular rotations as a main cause for the AIE effect. On the basis of the mechanism understanding, we have developed a series of new fluorescent and phosphorescent AIE molecules with emission efficiency up to unity and emission color covering the entire visible spectral region. By incorporating the AIE moieties into monomers, we have succeeded in the synthesis of new polymers with AIE features. I will also discuss the unique functionalities and potential applications of the AIE molecules and polymers.
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