A study on the laser flash photolysis of phenothiazine and its N-alkyl derivatives

被引：17

作者：

Guo, QX

Liang, ZX

Liu, B

Yao, SD

Liu, YC

机构：

[1] LANZHOU UNIV,NATL LAB APPL ORGAN CHEM,LANZHOU 730000,PEOPLES R CHINA

[2] ACAD SINICA,SHANGHAI INST NUCL RES,LAB RADIAT CHEM,SHANGHAI 201800,PEOPLES R CHINA

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1996年 / 93卷 / 01期

基金：

中国国家自然科学基金;

关键词：

excited triplet state; laser flash photolysis; phenothiazine derivatives; radical cation; TCNE;

D O I：

10.1016/1010-6030(95)04148-6

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：

Photophysical and photochemical properties of phenothiazine and N-alkylphenothiazines (alkyl = methyl, ethyl, isobutyl, phenyl, benzyl) in acetonitrile were studied by means of nanosecond laser flash photolysis. Transient absorption measurements showed that the excited triplet state, radical cation, neutral radical, dimeric radical cation and dimeric dication were formed during the photolysis, The kinetics of the formation and conversion of the transient species was investigated. The deprotonation of the phenothiazine radical cation (PTH+) to give the neutral radical PT. was prevented by the presence of tetracyanoethylene (TCNE). The mechanism of the interaction of phenothiazines and TCNE is discussed.

引用

页码：27 / 31

页数：5

共 26 条

[1] LASER PHOTOIONIZATION OF PHENOTHIAZINE IN ALCOHOLIC AND AQUEOUS MICELLAR SOLUTION - ELECTRON-TRANSFER FROM TRIPLET-STATES TO METAL-ION ACCEPTORS [J].