多支结构的均三嗪衍生物的合成及双光子吸收性质  

Syntheses and Two-photon Absorption Properties of Multi-branched s-Triazine Derivatives

作　　者：崔月芝[1] 方奇 薛刚[2] 许贵宝[2] 于文涛[2] 尹磊[2] 

机构地区：[1]山东轻工业学院化工系,济南250100 [2]山东大学晶体材料国家重点实验室,济南250100

出　　处：《化学学报》2005年第15期1421-1428,共8页Acta Chimica Sinica

基　　金：国家自然科学基金(Nos.20172034;20472044)教育部高校骨干教师资助项目.

摘　　要：合成了3个系列各含有单支、双支和三支结构的9个均三嗪衍生物,测定了它们的线性吸收和发射性质以及双光子吸收和发射性质.随着三嗪环上侧链数目的增加,线性吸收谱(吸收峰位于390-440 nm)、荧光谱(发射峰位于460- 580 nm)和双光子荧光谱(激发波长800 nm)都发生红移;各种光谱的强度逐渐增强;基态与激发态的偶极矩之差△μeg也逐渐增大.另外,从单支到三支结构,双光子吸收截面σ随侧链数目呈非线性增加.这表明多支结构的双光子吸收存在显著的增强效应.Three series of multi-branched s-triazine derivatives with one, two or three branches have been synthesized. For each series, the linear absorption （peak position： 390～440 nm） and emission spectra （peak position： 460～580 nm）, along with the two-photon exited fluorescence spectra excited at 800 nm, showed regular red-shifts as the branch number was increased, and their spectral intensities were significantly enlarged from one- to three-branched structures. In addition, the difference of dipole moment （△μeg） betweent he ground and the excited states became larger as the branch number was increased from 1 to 3. The two-photon absorption cross section a was non-linearly increased with the increase of the branch number and the reduced a, indicating a remarkable cooperative enhancement of a in the multi-branched s-triazine derivatives.

关 键 词：多支结构 均三嗪衍生物 合成 双光子吸收性质 增强效应 

分 类 号：O626[理学—有机化学]