CIS-TRANS PHOTOISOMERIZATION OF AZOBENZENE - SOLVENT AND TRIPLET DONOR EFFECTS

被引：256

作者：

BORTOLUS, P

MONTI, S

机构：

[1] Laboratorio di Fotochimica e Radiazioni di Alta Energia, Consiglio Nazionale delle Ricerche

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1979年 / 83卷 / 06期

关键词：

D O I：

10.1021/j100469a002

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 quantum yields for trans → cis (φc) and cis → trans (φt) photoisomerization processes for azobenzene have been determined at a λexc of 317 and 439 nm in solvents of different polarity. At both irradiation wavelengths, φc increases and φt decreases with increasing polarity of the solvent; the sum (φt + φc), however, remains fairly constant. For the triplet sensitized reaction, φt ≃ 1 and the ratio φt/φc ≃ 65. The data suggest that upon direct photolysis isomerization proceeds in the singlet manifold. © 1979 American Chemical Society.

引用

页码：648 / 652

页数：5

共 29 条

[1]

AMOUYAL E, UNPUBLISHED

[2] CIS-TRANS ISOMERIZATION OF IODINE-CATALYZED AZOBENZENE .3. [J].