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Synthesis and Photoproperties of Silicon Phthalocyanines and Silicon Naphthalocyanines
Author(s) -
Wen TsaiChuan,
Liu MinEng,
Young SuHay,
Lee YaSu,
Chen KuoMei,
Kuo ChenNan
Publication year - 1993
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.199300020
Subject(s) - chemistry , photochemistry , singlet oxygen , photosensitizer , silicon , photodynamic therapy , quenching (fluorescence) , substituent , phthalocyanine , hematoporphyrin , electron transfer , oxygen , fluorescence , stereochemistry , organic chemistry , optics , physics
Silicon phthalocyanines and silicon naphthalocyanines, which are two derivatives in the family of hematoporphyrin, have been synthesized to assess their potential as photosensitizers for photodynamic therapy. For these complexes the red shift of their Q‐band maximum absorption tends to depend on the nature of the axial substituent. The bimolecular rate coefficients for the interacting between photosensitizer, either SiNC or SiPC, and generated singlet molecular oxygen were determined from the time‐resolved emission spectrum of singlet oxygen at 1.27 μm. On the basis of these data the electron‐transfer quenching mechanism is discussed in relation to the Marcus model.