QUENCHING OF THE TRIPLET-STATE OF METALLOPHTHALOCYANINES BY DIOXYGEN IN THE PRESENCE OF BOVINE SERUM-ALBUMIN

被引：17

作者：

LANG, K ^{[1
]}

WAGNEROVA, DM ^{[1
]}

ENGST, P ^{[1
]}

KUBAT, P ^{[1
]}

机构：

[1] CZECHOSLOVAK ACAD SCI,J HEYROVSKY INST PHYS CHEM,CS-18200 PRAGUE 8,CZECH REPUBLIC

来源：

ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS | 1994年 / 187卷

关键词：

PHOTOSENSITIZATION; PHTHALOCYANINE; DIOXYGEN QUENCHING; ALBUMIN; LASER FLASH PHOTOLYSIS;

D O I：

10.1524/zpch.1994.187.Part_2.213

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：

Sulfonated chloro-aluminium phthalocyanine (AlSPC), excited by laser flash to the 3pipi* state, is quenched by dioxygen in a reaction with the rate constant k1 = 1.7 X 10(9) dm3 mol-1 s-1. In the presence of bovine serum albumin (BSA), the kinetics become biphasic: The faster process is identical with that in the absence of albumin, the slower one (k2 = 1.9 X 10(8) dm-3 mol-1 s-1) corresponds to quenching of the excited phthalocyanine-BSA adduct by dioxygen. In the absence of oxygen, BSA increases the lifetime of the 3pipi* state from 440 mus to 1160 mus. The calculated AlSPC: BSA ratio in the adduct is 2 : 1. Analogous behaviour was observed with sulfonated zinc phthalocyanine and sulfonated free ligand.

引用

页码：213 / 221

页数：9

共 18 条

[1]

AMBROZ M, 1992, THESIS C U PRAGUE

[2] THE EFFECT OF SOLVENT DEUTERATION ON THE PHOTOPHYSICS OF SULFONATED ALUMINUM PHTHALOCYANINE [J].

BEEBY, A ;

PARKER, AW ;

SIMPSON, MSC ;

PHILLIPS, D .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY, 1992, 16 (01) :73-81

[3] BIOLOGICAL-ACTIVITIES OF PHTHALOCYANINES .7. PHOTOINACTIVATION OF V-79 CHINESE-HAMSTER CELLS BY SELECTIVELY SULFONATED GALLIUM PHTHALOCYANINES [J].

BRASSEUR, N ;

ALI, H ;

LANGLOIS, R ;

VANLIER, JE .

PHOTOCHEMISTRY AND PHOTOBIOLOGY, 1987, 46 (05) :739-744

[4] EXCITED SINGLET AND TRIPLET-STATE ELECTRON-TRANSFER REACTIONS OF ALUMINUM(III) SULFONATED PHTHALOCYANINE [J].

DARWENT, JR ;

MCCUBBIN, I ;

PHILLIPS, D .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS II, 1982, 78 :347-357

[5] PHOTOCHEMICAL AND RADIOLYTIC OXIDATION OF A ZINC PORPHYRIN BOUND TO HUMAN SERUM-ALBUMIN [J].

DAVILA, J ;

HARRIMAN, A .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1990, 112 (07) :2686-2690

[6] PHOTOREACTIONS OF MACROCYCLIC DYES BOUND TO HUMAN-SERUM-ALBUMIN [J].

DAVILA, J ;

HARRIMAN, A .

PHOTOCHEMISTRY AND PHOTOBIOLOGY, 1990, 51 (01) :9-19

[7] ATTEMPTED PHOTOPRODUCTION OF HYDROGEN USING SULFOPHTHALOCYANINES AS CHROMOPHORES FOR 3-COMPONENT SYSTEMS [J].

HARRIMAN, A ;

RICHOUX, MC .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS II, 1980, 76 :1618-1626

[8] FAR-RED-ABSORBING PHOTOSENSITIZERS - THEIR USE IN THE PHOTODYNAMIC THERAPY OF TUMORS [J].

JORI, G .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 1992, 62 (03) :371-378

[9] INFLUENCE OF PROTONATION ON THE REACTIONS OF TRIPLET-STATE SULFONATED CHLORO-ALUMINUM(III) PHTHALOCYANINE WITH DIOXYGEN [J].

LANG, K ;

WAGNEROVA, DM ;

ENGST, P ;

KUBAT, P .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1992, 88 (05) :677-680

[10] THE ROLE OF EXCITED-STATES IN THE PHOTOSENSITIZED OXIDATION OF SUBSTRATES WITH DIOXYGEN [J].

LANG, K ;

WAGNEROVA, DM ;

BRODILOVA, J .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 1993, 72 (01) :9-14

← 1 2 →