STUDIES OF THE TRIPLET-STATE OF 2-(2'-HYDROXYPHENYL)BENZOTHIAZOLE

被引：41

作者：

CHOU, PT

STUDER, SL

MARTINEZ, ML

机构：

[1] Department of Chemistry, University of South Carolina, Columbia

来源：

CHEMICAL PHYSICS LETTERS | 1991年 / 178卷 / 04期

关键词：

D O I：

10.1016/0009-2614(91)90271-A

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：

We present the first observation of the phosphorescence of 2-(2'-hydroxyphenyl)benzothiazole in nonpolar solvents. The phosphorescence has a maximum at 648 nm, and the lifetime was measured to be 1.95 +/- 0.2 ms at 77 K in methylcyclohexane glass. The observed decay dynamics of the phosphorescence in combination with studies of the delayed fluorescence and two-step laser-induced fluorescence unambiguously prove that the observed triplet state is ascribed to the cis-keto form of HBT.

引用

收藏

页码：393 / 398

页数：6

相关论文

共 12 条

[1] TRIPLET-STATE FORMATION AND CIS-]TRANS ISOMERIZATION IN THE EXCITED SINGLET-STATE OF THE KETO TAUTOMER OF 2-(2'-HYDROXYPHENYL)BENZOTHIAZOLE [J].

ALSOUFI, W ;

GRELLMANN, KH ;

NICKEL, B .

CHEMICAL PHYSICS LETTERS, 1990, 174 (06) :609-616

[2] INTRAMOLECULAR PROTON-TRANSFER AND EXCITED-STATE RELAXATION IN 2-(2-HYDROXYPHENYL)BENZOTHIAZOLE [J].

BARBARA, PF ;

BRUS, LE ;

RENTZEPIS, PM .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1980, 102 (17) :5631-5635

[3] A COMPREHENSIVE INVESTIGATION OF THE PHOTOPHYSICS AND PHOTOCHEMISTRY OF SALICYLIDENEANILINE AND DERIVATIVES OF PHENYLBENZOTHIAZOLE INCLUDING SOLVENT EFFECTS [J].

BECKER, RS ;

LENOBLE, C ;

ZEIN, A .

JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (13) :3509-3517

[4] MECHANISM OF THE GROUND-STATE REVERSE PROTON-TRANSFER OF 2-(2-HYDROXYPHENYL)BENZOTHIAZOLE [J].

BREWER, WE ;

MARTINEZ, ML ;

CHOU, PT .

JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (05) :1915-1918

[5] LASER FLASH CHEMILUMINESCENCE STUDY OF O2(1-DELTA) PHOTOELIMINATED FROM 1,4-DIMETHYLNAPHTHALENE ENDOPEROXIDE [J].

CHOU, PT ;

FREI, H .

JOURNAL OF CHEMICAL PHYSICS, 1987, 87 (07) :3843-3854

[6] SENSITIZATION OF O2 1-SIGMA-G+-]1-DELTA-G EMISSION IN SOLUTION, AND OBSERVATION OF O2 1-DELTA-G-]3-SIGMA-G- CHEMI-LUMINESCENCE UPON DECOMPOSITION OF 1,4-DIMETHYLNAPHTHALENE ENDOPEROXIDE [J].

CHOU, PT ;

FREI, H .

CHEMICAL PHYSICS LETTERS, 1985, 122 (1-2) :87-92

[7]

CHOU PT, UNPUB

[8] THE DEVELOPMENT AND USE OF QUANTUM-MECHANICAL MOLECULAR-MODELS .76. AM1 - A NEW GENERAL-PURPOSE QUANTUM-MECHANICAL MOLECULAR-MODEL [J].

DEWAR, MJS ;

ZOEBISCH, EG ;

HEALY, EF ;

STEWART, JJP .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1985, 107 (13) :3902-3909

[9] TRANSIENT ABSORPTION AND 2-STEP LASER EXCITATION FLUORESCENCE STUDIES OF PHOTOISOMERIZATION IN 2-(2-HYDROXYPHENYL)BENZOXAZOLE AND 2-(2-HYDROXYPHENYL)BENZOTHIAZOLE [J].

ITOH, M ;

FUJIWARA, Y .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1985, 107 (06) :1561-1565

[10] FEMTOSECOND SPECTROSCOPY OF EXCITED-STATE PROTON-TRANSFER IN 2-(2'-HYDROXYPHENYL)BENZOTHIAZOLE [J].

LAERMER, F ;

ELSAESSER, T ;

KAISER, W .

CHEMICAL PHYSICS LETTERS, 1988, 148 (2-3) :119-124