SPECTROSCOPIC INVESTIGATION OF CYANOVINYL-DIETHYLANILINE DYES IN SOLUTIONS

被引：29

作者：

DESHPANDE, AV ^{[1
]}

BEIDOUN, A ^{[1
]}

PENZKOFER, A ^{[1
]}

WAGENBLAST, G ^{[1
]}

机构：

[1] BASF AG, W-6700 LUDWIGSHAFEN, GERMANY

来源：

CHEMICAL PHYSICS | 1990年 / 148卷 / 01期

关键词：

D O I：

10.1016/0301-0104(90)89014-H

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：

Dye solutions of 4-dicyanovinyl-N,N-diethylaniline (DCVA) and 4-tricyanovinyl-N,N-diethylaniline (TCVA) are analysed by absorption and fluorescence spectroscopy. At room temperature the fluorescence quantum yields are very small. Temperature dependent fluorescence quantum efficiency measurements of DCVA in methanol indicate an intrinsic barrierless S1-S0 relaxation of the dye molecules. The permanent dipole moments of the molecules in the ground state and excited state are estimated from spectral shifts of the absorption and emission spectra. © 1990.

引用

页码：141 / 154

页数：14

共 84 条

[1] NON-RADIATIVE DEACTIVATION CHANNELS OF MOLECULAR ROTORS [J].