阴阳离子菁染料J-聚集体的荧光光谱研究  

Fluorescence Spectra of J-Aggregates of Anionic-Cationic Cyanine Dyes

作　　者：孟涛[1] 徐端夫[2] 王笃金[2] 康灵华[1] 李晓苇[3] 邹竞[1] 

机构地区：[1]北京印刷学院基础部,北京102600 [2]中国科学院化学研究所高分子物理与化学国家重点实验室,北京100080 [3]河北大学物理与技术学院,河北保定071002

出　　处：《光谱学与光谱分析》2008年第6期1340-1342,共3页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(30371604)资助

摘　　要：采用荧光光谱技术,研究了两种阴阳离子菁染料及对应的阴离子和阳离子菁染料在溴碘化银立方体颗粒上形成的J-聚集体的荧光光谱特性,并与其在溴碘化银立方体上的光谱增感率进行了实验对比。结果表明:阴阳离子菁染料的荧光光谱峰值明显低于阴离子、阳离子菁染料,说明其吸收光子后,大部分电子转移到溴碘化银表面。因此具有较高的光谱增感效率。In the present paper, the fluorescence spectral curves of J-aggregates of two kinds of anionic-cationic cyanine dyes adsorbed on AgIBr cubic microcrystals were measured by using fluorescence spectroscopy, and compared with the sensitivity characteristic of anionic-cationic cyanine dyes. The results show that the peaks of fluorescence spectral curves of anionic-cationic cyanine dyes were lower than that of anionic and cationic cyanine dyes, and the higher sensitivity efficiency was due to the fact that more electrons transfer to the surface of AgIBr microcrystal.

关 键 词：阴阳离子菁染料 荧光光谱 溴碘化银 光谱增感 

分 类 号：O657.3[理学—分析化学]