MEDIUM EFFECTS ON THE PHOTOCHEMICAL-REACTION BETWEEN PYRENE AND INDOLE - A LASER FLASH-PHOTOLYSIS STUDY

被引：17

作者：

BORSARELLI, CD ^{[1
]}

MONTEJANO, HA ^{[1
]}

COSA, JJ ^{[1
]}

PREVITALI, CM ^{[1
]}

机构：

[1] UNIV NACL RIO CUARTO, DEPT QUIM & FIS, RA-5800 RIO CUARTO, ARGENTINA

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1995年 / 91卷 / 01期

关键词：

PYRENE; INDOLE; LASER FLASH PHOTOLYSIS; ELECTRON TRANSFER;

D O I：

10.1016/1010-6030(95)04124-X

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：

A laser flash photolysis study of the photoinduced electron-transfer reaction between pyrene and indole is reported. The pyrene radical anion and the hydropyrenil radical were confirmed as reaction intermediates from their transient absorption spectra. The photobleaching of pyrene was observed in the presence of indole but not in the presence of 1-methylindole. The quantum yields of the reaction and of the transient species are highly dependent on the solvent. The reaction was also carried out in the presence of tetrabutylammonium perchlorate, and an inhibitory effect by the salt was observed. At the same time, the quantum yield of the free ions increased. The results were interpreted by a mechanism that involves a proton transfer following the initial electron transfer. The effect of micelles on the reaction was also investigated.

引用

页码：13 / 19

页数：7

共 24 条

[11] PHOTOCHROMIC HETEROCYCLIC FULGIDES .3. THE USE OF (E)-ALPHA-(2,5-DIMETHYL-3-FURYLETHYLIDENE) (ISOPROPYLIDENE)SUCCINIC ANHYDRIDE AS A SIMPLE CONVENIENT CHEMICAL ACTINOMETER [J].

HELLER, HG ;

LANGAN, JR .

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2, 1981, (02) :341-343

[12] PHOTOCHEMISTRY OF PYRENETRIALKYLAMINE SYSTEMS IN POLAR-SOLVENTS - HYDROPYRENYL FORMATION FROM A NEW TYPE OF LONG-LIVED ION-PAIR FORMED BY RECOMBINATION OF FREE IONS [J].

HIRATA, Y ;

SAITO, T ;

MATAGA, N .

JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (12) :3119-3122

[13] ACTINOMETRY IN MONOCHROMATIC FLASH-PHOTOLYSIS - THE EXTINCTION COEFFICIENT OF TRIPLET BENZOPHENONE AND QUANTUM YIELD OF TRIPLET ZINC TETRAPHENYL PORPHYRIN [J].

HURLEY, JK ;

SINAI, N ;

LINSCHITZ, H .

PHOTOCHEMISTRY AND PHOTOBIOLOGY, 1983, 38 (01) :9-14

[14]

MATTAY J, 1991, TOP CURR CHEM, V159, P219

[15]

MIYASAKA H, 1992, N-HOLLAND D, P155

[16] EFFECTS OF INDOLE AND TRYPTOPHAN ON FURAN OXIDATION BY SINGLET OXYGEN IN MICELLAR SOLUTIONS [J].

MIYOSHI, N ;

TOMITA, G .

PHOTOCHEMISTRY AND PHOTOBIOLOGY, 1979, 29 (03) :527-530

[17] SOLVENT EFFECTS ON THE PHOTOINDUCED ELECTRON-TRANSFER REACTION BETWEEN EXCITED SINGLET PYRENE AND INDOLE [J].

MONTEJANO, HA ;

COSA, JJ ;

GARRERA, HA ;

PREVITALI, CM .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 1995, 86 (1-3) :115-120

[18] PICOSECOND LASER PHOTOLYSIS STUDIES OF HYDROGEN-ATOM TRANSFER-REACTION VIA HETEROEXCIMER STATE IN PYRENE PRIMARY AND PYRENE SECONDARY AROMATIC AMINE SYSTEMS - ROLE OF HYDROGEN-BONDING INTERACTION BETWEEN AMINO GROUP OF DONOR AND PI-ELECTRONS OF ACCEPTOR IN THE HETEROEXCIMER [J].

OKADA, T ;

KARAKI, I ;

MATAGA, N .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1982, 104 (25) :7191-7195

[19] ELECTRON-TRANSFER ORGANIC AND BIOORGANIC PHOTOCHEMISTRY [J].

PAC, C ;

ISHITANI, O .

PHOTOCHEMISTRY AND PHOTOBIOLOGY, 1988, 48 (06) :767-785

[20] INTERMOLECULAR EXCIPLEX FORMATION BETWEEN PYRENE DERIVATIVES AND 1,2-DIMETHYLINDOLE [J].

PALMANS, JP ;

VANDERAUWERAER, M ;

SWINNEN, AM ;

DESCHRYVER, FC .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1984, 106 (25) :7721-7728

← 1 2 3 →