Spectral characterization of thiophene acylhydrazides

被引：11
作者：
Skene, W. G. [1 ]
Guarin, Sergio Andres Perez [1 ]
机构：
[1] Univ Montreal, Dept Chem, Montreal, PQ H3C 3J7, Canada
来源：
JOURNAL OF FLUORESCENCE | 2007年 / 17卷 / 05期
基金：
加拿大自然科学与工程研究理事会; 加拿大创新基金会;
关键词：
thiopheno acylhydrazides; fluorescence; quantum yields; triplet state; intersystem crossing;
D O I：
10.1007/s10895-007-0209-x
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
The spectroscopic properties of a series of new thiophene acylhydrazides were examined. Extremely low fluorescence quantum yields were observed for all these compounds including the hydrazide parent compound and their acylhydrazide homologous polymers. The heteroatoms concomitant with the thiophene sulfurs were responsible for decreasing the singlet-triplet energy level resulting in increased intersystem crossing and low fluorescence emission for the studied compounds. Intramolecular triplet self-quenching from the acylhydrazide bond ultimately deactivates the triplet state by non-emissive means.
引用
收藏
页码：540 / 546
页数：7
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