Tuning fluorescence properties of imidazole derivatives with thiophene and thiazole

被引：71

作者：

Feng, K

Hsu, FL

Van DerVeer, D

Bota, K

Bu, XR

机构：

[1] Clark Atlanta Univ, Dept Chem, Atlanta, GA 30314 USA

[2] Clark Atlanta Univ, Lab Electroopt Mat, Atlanta, GA 30314 USA

[3] USA, Edgewood Chem & Biol Ctr, Aberdeen Proving Ground, MD 21010 USA

[4] Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2004年 / 165卷 / 1-3期

基金：

美国国家航空航天局;

关键词：

imidazole; lophine; thiazole; thiophene; fluorescence; crystal structure;

D O I：

10.1016/j.jphotochem.2004.03.021

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The steric effect from aromatic species at the 2-position has been evaluated in 2,4,5-trisubstituted imidazole system. The steric interaction from the 2-position has a direct impact on the fluorescent properties. There is a correlation between the twist and fluorescence quantum yield. The larger the twist is, and the more reduction of quantum yield it will have. The use of thiazole at the 2-position almost eliminates the interaction and retains the coplanarity. As a result, the substitution at the 1-position does not compromise the quantum yield. (C) 2004 Published by Elsevier B.V.

引用

页码：223 / 228

页数：6

共 24 条

[11]

LI H, 1996, I37 AM SOC DIV POLYM, P599

[12]

LI H, 1998, P NASA URC TECHN C, V3, P671

[13] LOPHINE CHEMI-LUMINESCENCE FOR METAL-ION DETERMINATIONS [J].