Oxygen sensing system using triplet-triplet reflectance of zinc porphyrin immobilized in polymer membrane studies by laser flash photolysis

被引：22

作者：

Furuto, T

Lee, SK

Amao, Y

Asai, K

Okura, I

机构：

[1] Tokyo Inst Technol, Dept Bioengn, Midori Ku, Yokohama, Kanagawa 2268501, Japan

[2] Natl Aerosp Lab, Aerodynam Div, Chofu, Tokyo 1828522, Japan

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2000年 / 132卷 / 1-2期

关键词：

laser flash photolysis; oxygen sensing; zinc porphyrins; Stern-Volmer equation;

D O I：

10.1016/S1010-6030(00)00203-3

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：

A new oxygen sensing system based on the photoexcited triplet stare quenching of photosensitizers immobilized in polymer matrices has been developed by laser flash photolysis. As the photosensitizers, zinc tetraphenylporphyrin (ZnTPP), zinc tetrakis(pentafluorophenyl) porphyrin, (ZnTFPP), zinc etioporphyrin (ZnEtioP), zinc octaethylporphyrin (ZnOEP), or zinc tetrabenzoporphyrin (ZnTBP) are used. As the polymer matrices, polystyrene (PS), polyvinylchloride (PVC), polymethylmethacrylate (PMMA) and polydimethylsiloxane (GP197) are used. Among the above systems, ZnTFPP immobilized in PS membrane is the most suitable for oxygen sensing; a large Stern-Volmer constant (0.611 Torr(-1)) and good stability against irradiation were obtained. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：81 / 86

页数：6

共 45 条

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