ISOMERIZATION OF DIPHENYL POLYENES .3. ABSORPTION AND FLUORESCENCE PROPERTIES OF 1,4-DIPHENYL-1,3-BUTADIENE IN POLY(VINYL ALCOHOL) FILM

被引：12

作者：

KAWSKI, A ^{[1
]}

KUKLINSKI, B ^{[1
]}

KUBICKI, A ^{[1
]}

GRYCZYNSKI, I ^{[1
]}

机构：

[1] UNIV MARYLAND,DEPT BIOL CHEM,CTR FLUORESCENCE SPECT,BALTIMORE,MD 21201

来源：

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES | 1992年 / 47卷 / 12期

关键词：

D O I：

10.1515/zna-1992-1205

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 effect of temperature on the absorption and fluorescence properties of 1,4-diphenyl-1,3-butadiene (DPB) in poly(vinyl alcohol) film (PVA) was investigated in the range from 293 to 423 K. Upon heating above 353 K, the optical density in the long wavelength region (at 339 nm) increases five times only, whereas for 1,6-diphenyl-1,3,5-hexatriene (DPH) and 1,8-diphenyl-1,3,5,7-octatetraene (DPO) ten and twenty times, respectively. However, the total quantum yield (PHI(F) = 0.68) at 293 K is greater than that for the trans-trans form (PHI(F) = 0.63) and decreases with growing temperature. Both this effect and broadening effect in the fluorescence band at 293 K evidence the existence of two emission centres, i.e. the trans-trans and cis-trans conformers.

引用

页码：1204 / 1210

页数：7

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