Photophysical Properties and Photoreduction of 5,10,15,20-Tetrakis-(4-N-Methylpyridyl)Porphyrin in Formamide

被引：4
|
作者：
N. N. Kruk
A. A. Korotkii
机构：
[1] National Academy of Sciences of Belarus,Institute of Molecular and Atomic Physics
来源：
Journal of Applied Spectroscopy | 2000年 / 67卷 / 6期
关键词：
porphyrin; photoreduction; unsteady absorption spectrum;
D O I：
10.1023/A:1004164119731
中图分类号：
学科分类号：
摘要：
The photophysical characteristics and photochemical conversions of 5,10,15,20-tetrakis-(4-N-methylpyridyl)porphyrin in a highly polar solvent, formamide, are investigated. It has been established that no photochemical reactions occur on excitation in the visible spectral region, while UV excitation (λ = 347 nm) causes photoreduction of porphyrin molecules followed by the formation of protonated products. The solvent molecules serve as a reducing agent. Photoreduction occurs in both air-saturated and deoxygenated solutions, but the nature of the products formed is different: chlorin molecules are formed in the air-saturated solutions and the successive photoconversion porphyrin→phlorin→porphomethene→porphyrinogene occurs in the deoxygenated solutions.
引用
收藏
页码：966 / 971
页数：5
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