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Spectral study of mono‐ meso ‐(hydroxyphenyl)octamethylporphyrins
Author(s) -
Ming Li,
XiaoYu Chen,
JiangZong Zou,
Zheng Xu,
XiaoZeng You
Publication year - 1996
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.19960140105
Subject(s) - chemistry , porphyrin , chromophore , photochemistry , spectral properties , spectroscopy , polymer chemistry , stereochemistry , computational chemistry , physics , quantum mechanics
The behaviour of porphyrins [mono‐ meso ‐(2‐hydroxyphenyl)octamethylporphyrin, mono‐ meso ‐(4‐hydroxyphenyl)octamethylporphyrin and mono‐ meso ‐(3,4‐dihydroxyphenyl)octamethylporphyrin] in basic solution is examined by UV‐Visible and 1 H NMR spectroscopy. The unusual nature of the spectra may be explained by the formation of porphomethene moieties in which the porphyrin chromophore is modified by interruption of the π ‐system. The porphyrins in bases are less susceptible to oxidation in contrast with meso ‐tetrakis‐(4′‐hydrooxyphenyl)porphyrins.