ULTRAFAST PHOTOCHEMICAL EVENTS ASSOCIATED WITH THE PHOTOSENSITIZATION PROPERTIES OF A SQUARAINE DYE

被引：107

作者：

KAMAT, PV ^{[1
]}

DAS, S ^{[1
]}

THOMAS, KG ^{[1
]}

GEORGE, MV ^{[1
]}

机构：

[1] REG RES LAB,PHOTOCHEM RES UNIT,TRIVANDRUM 695019,INDIA

来源：

CHEMICAL PHYSICS LETTERS | 1991年 / 178卷 / 01期

关键词：

D O I：

10.1016/0009-2614(91)85056-3

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 photosensitization properties of a squaraine dye are elucidated by means of transient absorption and emission spectroscopy techniques. The charge injection from excited dye into the conduction band of TiO2 semiconductor occurs within the laser pulse duration of 18 ps (k > 5 X 10(10) s-1). The quick recombination between the dye radical cation and the injected charge (k = 3.7 X 10(9) s-1) is a major limiting factor in controlling the efficiency of sensitization.

引用

页码：75 / 79

页数：5

共 25 条

[1] PICOSECOND FLASH-PHOTOLYSIS APPARATUS WITH HIGH ABSORBANCE RESOLUTION
EBBESEN, TW
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 1988, 59 (08) : 1307 - 1309
[2] PHOTOCHEMISTRY OF 3,4,9,10-PERYLENETETRACARBOXYLIC DIANHYDRIDE DYES .4. SPECTROSCOPIC AND REDOX PROPERTIES OF OXIDIZED AND REDUCED FORMS OF THE BIS(2,5-DI-TERT-BUTYLPHENYL)IMIDE DERIVATIVE
FORD, WE
HIRATSUKA, H
KAMAT, PV
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1989, 93 (18) : 6692 - 6696
[3] PHOTOELECTROCHEMISTRY IN SEMICONDUCTOR PARTICULATE SYSTEMS .16. PHOTOPHYSICAL AND PHOTOCHEMICAL ASPECTS OF COUPLED SEMICONDUCTORS - CHARGE-TRANSFER PROCESSES IN COLLOIDAL CDS-TIO2 AND CDS-AGI SYSTEMS
GOPIDAS, KR
BOHORQUEZ, M
KAMAT, PV
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (16) : 6435 - 6440
[4] INFRARED DYES FOR OPTICAL STORAGE
JIPSON, VB
JONES, CR
[J]. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY, 1981, 18 (01): : 105 - 109
[5] PHOTOELECTROCHEMISTRY IN COLLOIDAL SYSTEMS - INTERFACIAL ELECTRON-TRANSFER BETWEEN COLLOIDAL TIO2 AND THIONINE IN ACETONITRILE
KAMAT, PV
[J]. JOURNAL OF PHOTOCHEMISTRY, 1985, 28 (04): : 513 - 524
[6] COLLOIDAL SEMICONDUCTORS AS PHOTOCATALYSTS FOR SOLAR-ENERGY CONVERSION
KAMAT, PV
DIMITRIJEVIC, NM
[J]. SOLAR ENERGY, 1990, 44 (02) : 83 - 98
[7] PHOTOELECTROCHEMISTRY IN PARTICULATE SYSTEMS .9. PHOTOSENSITIZED REDUCTION IN A COLLOIDAL TIO2 SYSTEM USING ANTHRACENE-9-CARBOXYLIC ACID AS THE SENSITIZER
KAMAT, PV
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1989, 93 (02) : 859 - 864
[8] PHOTOELECTROCHEMISTRY IN SEMICONDUCTOR PARTICULATE SYSTEMS .12. PRIMARY PHOTOCHEMICAL EVENTS IN CDS SEMICONDUCTOR COLLOIDS AS PROBED BY PICOSECOND LASER FLASH-PHOTOLYSIS
KAMAT, PV
EBBESEN, TW
DIMITRIJEVIC, NM
NOZIK, AJ
[J]. CHEMICAL PHYSICS LETTERS, 1989, 157 (05) : 384 - 389
[9] PHOTOELECTROCHEMISTRY IN SEMICONDUCTOR PARTICULATE SYSTEMS .14. PICOSECOND CHARGE-TRANSFER EVENTS IN THE PHOTOSENSITIZATION OF COLLOIDAL TIO2
KAMAT, PV
[J]. LANGMUIR, 1990, 6 (02) : 512 - 513
[10] KAMAT PV, IN PRESS

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