高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (6): 906.

• 论文 • 上一篇    下一篇

2-(2'-羟基苯基)苯并噁唑在高分子介质中的激发态分子内质子转移和光谱

汤国庆, 尚小明, 张桂兰, 杜荣建, 陈文驹   

  1. 南开大学现代光学研究所, 天津 300071
  • 收稿日期:1995-08-08 出版日期:1996-06-24 发布日期:1996-06-24
  • 通讯作者: 汤国庆,男,55岁.副教授.
  • 作者简介:汤国庆,男,55岁.副教授.
  • 基金资助:

    国家自然科学基金

Excited-state Intramolecular Proton Transfer and Spectroscopy of 2-(2'-Hydroxy phenyl) benzoxazole in Solid Polymer Matrices

TANG Guo-Qing, SHANG Xiao-Ming, ZHANG Gui-Lan, DU Rong-Jian, CHEN Wen-Ju   

  1. Institute of Modern Optics, Nankai University, Tianjin 300071
  • Received:1995-08-08 Online:1996-06-24 Published:1996-06-24

摘要: 首次报道了2-(2'-羟基苯基)苯并f唑(HBO)分子在若干高分子固体膜中的电子光谱和激发态分子内质子转移(ESIPT)的特性,并与溶液体系中的相应特性进行了比较,揭示了新的吸收和发射带,并讨论了高分子基质对这些特性的影响和作用机制。

关键词: 2-(2'-羟基苯基)苯并噁唑, 质子转移, 电子光谱, 高分子基质

Abstract: This paper first reports the spectroscopy and the properties of excited-state intramolecular proton transfer(ESIPT) of 2-(2'-hydroxy phenyl) benzoxazole(HBO) in some solid polymer matrices and the matix effects on them,The results show that;(1) The properties of ESIPTand spectra of HBOin the non-polar and weak polar polymer matrices would not be modified compared with those in the solution systems.The matrices,on the other hand,could improve the quantum yield of ESIPTfluorescence,(2) The polymer matrices with strong H-bonding activity and polarity can modify the spectra and the ESIPTefficiency of HBOdue to the formation of H-bonding complex between HBOand the matrix,which,however,could be eliminated effectively by using a special micelle method to isolate HBOfrom the matrices.(3) Thermodynamic equilibrium of the ground state rotamers of HBOin the solid polymer matrices seems to have a tendency which is unfavourable to the formation of the rotamer Ⅰ and Ⅲ.

Key words: 2-(2'-Hydroxy phenyl)benzoxazole, Proton transfer, Electronic spectra, Solid polymer matrix

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