Visible light singlet oxygen production with tetra(4-carboxyphenyl)porphyrin/SiO2
Visible light singlet oxygen production with tetra(4-carboxyphenyl)porphyrin/SiO2
复制标题
DOI：
10.1016/j.jphotochem.2013.03.005
复制
发表时间：
2013-05-01
影响因子：
4.3
通讯作者：
Di Mauro, Eduardo
中科院分区：
文献类型：
--
作者：
Diaz-Uribe, Carlos E.;Daza, Martha C.;Di Mauro, Eduardo
用可见光（λ> 500 nm）照射2，2，6，6-四甲基-4-哌啶酮（TEMP）氧化生成的克里思的EPR谱，证明吸附在SiO_2上的四（4-羧基苯基）卟啉产生单线态氧。单重态氧的形成也通过蒽与O-1的氧化产物蒽醌和氧杂蒽酮的形成来证明（2）。EPR DMPO-O-2（中心点-）信号的缺失证明不存在超氧阴离子。未检测到其他氧自由基。采用紫外-可见光谱、紫外-可见漫反射光谱和红外光谱对TCPP和TCPP/SiO2进行了表征。(C)2013 Elsevier B. V.保留所有权利。
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.