EXCITED-STATE ACIDITY OF BIFUNCTIONAL MOLECULES .2. PICOSECOND EMISSION OF 5-(2-HYDROXYPHENYL)-3-PHENYL-1,2,4-OXADIAZOLE

被引：18

作者：

BRINN, IM ^{[1
]}

CARVALHO, CEM ^{[1
]}

HEISEL, F ^{[1
]}

MIEHE, JA ^{[1
]}

机构：

[1] CTR RECH NUCL,OPT APPL GRP,F-67200 STRASBOURG,FRANCE

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1991年 / 95卷 / 17期

关键词：

D O I：

10.1021/j100170a031

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：

5-(2-Hydroxyphenyl)-3-phenyl-1,2,4-oxadiazole has been synthesized in high yields and the kinetics of its intramolecular proton-transfer process has been investigated by using steady-state and time-dependent picosecond laser spectroscopy. On the basis of these experimental determinations and the results of quantum-mechanical calculations, the structures of the two fluorescing species observed have been assigned to two different conformations of the same molecular structure, both being present in the ground state. Rapid proton transfer in the excited state is suggested as the predominant quenching process of one of these conformations.

引用

页码：6540 / 6544

页数：5