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化学学报
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化学学报 ›› 2011, Vol. 69 ›› Issue (19): 2241-2247. 上一篇    下一篇

研究论文

α-吡喃酮衍生物的合成及聚集荧光增强性质研究

唐海云1,2，曾毅1，李迎迎1，陈金平1，李嫕*,1   

  1. (1中国科学院理化技术研究所 北京 100190)
    (2中国科学院研究生院 北京 100049)
  • 投稿日期:2011-04-15 修回日期:2011-05-19 发布日期:2011-06-07
  • 通讯作者: 李嫕 E-mail:yili@mail.ipc.ac.cn
  • 基金资助:

    国家自然科学基金;科技部国家重点基础研究发展规划项目

Synthesis and Aggregation-induced Emission of a Novel α-Pyrone Derivative

Tang Haiyun1,2 Zeng Yi1 Li Yingying1 Chen Jinping1 Li Yi*,1   

  1. (1 Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190)
    (2 Graduate University of Chinese Academy of Sciences, Beijing 100049)
  • Received:2011-04-15 Revised:2011-05-19 Published:2011-06-07

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设计合成了具有4个苯基取代的α-吡喃酮衍生物, 研究了该化合物在溶液中的稳态光物理过程, 以及在四氢呋喃/水混合溶剂中的聚集行为和发光性质. 该化合物在良溶剂中几乎没有发光, 而形成聚集体后发出明亮的蓝绿色荧光, 荧光量子产率达17%, 比溶液中增强了253倍. 根据化合物的结构和低温荧光实验结果推断, 聚集荧光增强主要是聚集体中分子内转动被有效地抑制, 非辐射跃迁大幅度减少所致.

关键词: α-吡喃酮, 聚集荧光增强, 分子内旋转受限, 纳米聚集体

A novel α-pyrone derivative was synthesized. Photophysics and aggregation of the molecule were investigated. The molecule is almost non-emissive in good solvent, but strongly emissive in solid or aggregate state. The aggregate of the molecule shows blue emission and the quantum yield reaches 17%. The emission enhancement is attributed to the restriction of intramolecular rotation in aggregates according to the structure of the molecule and temperature-dependant emission spectra results.

Key words: α-pyrone derivative, aggregation-induced emission enhancement, restriction of intramolecular rotation, nanoaggregate