Visible light singlet oxygen production with tetra(4-carboxyphenyl)porphyrin/SiO2

被引：23

作者：

Diaz-Uribe, Carlos E. ^{[1
,2
,3
]}

Daza, Martha C. ^{[2
]}

Paez-Mozo, Edgar A. ^{[3
]}

Martinez, Fernando ^{[3
]}

Guedes, Carmen L. B. ^{[4
]}

Di Mauro, Eduardo ^{[4
]}

机构：

[1] Univ Atlantico, Fac Ciencias Basicas, Grp Invest Fis Quim Aplicada & Estudios Ambiental, Lab Fotoquim & Fotobiol,Programa Quim, Barranquilla, Colombia

[2] Univ Ind Santander, Grp Bioquim Teor, Bucaramanga, Colombia

[3] Univ Ind Santander, Ctr Invest Catalisis, Bucaramanga, Colombia

[4] Univ Estadual Londrina, Lab Fluorescencia & Ressonancia Paramagnet Eletro, Londrina, PR, Brazil

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2013年 / 259卷

关键词：

Porphyrin; Silica; Singlet oxygen; TEMPO; ELECTRON-SPIN-RESONANCE; PHOTODYNAMIC THERAPY; PHOTOPHYSICAL PROPERTIES; HYDROGEN-PEROXIDE; PORPHYRIN; AGGREGATION; PHOTOSENSITIZERS; PHOTOCATALYSTS; DEGRADATION; SENSITIZERS;

D O I：

10.1016/j.jphotochem.2013.03.005

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 production of singlet oxygen with tetra(4-carboxyphenyl)porphyrin adsorbed on SiO2 irradiated with visible light (lambda > 500 nm) was evidenced by EPR spectra of TEMPO formed by oxidation of 2,2,6,6-tetramethy1-4-piperidone(TEMP) with O-1(2). The formation of singlet oxygen was also evidenced by the formation of anthraquinone and oxanthrone as oxidation products of anthracene with O-1(2). The absence of the EPR DMPO-O-2(center dot-) signal evidenced that superoxide anion was not present. No other oxygen radicals were detected. TCPP and TCPP/SiO2 were characterized with UV-vis, UV-vis diffuse reflectance and FT-IR spectroscopy. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：47 / 52

页数：6

共 45 条

[1] A SIMPLIFIED SYNTHESIS FOR MESO-TETRAPHENYLPORPHIN [J].