Synthesis, photophysical and photochemical properties of substituted zinc phthalocyanines

被引:194
作者
Guerol, Ilke
Durmus, Mahmut
Ahsena, Vefa
Nyokong, Tebello
机构
[1] Mat Inst, Marmara Res Ctr, TUBITAK, TR-41470 Gebze, Turkey
[2] Gebze Inst Technol, Dept Chem, TR-41400 Kocaeli, Turkey
[3] Rhodes Univ, Dept Chem, ZA-6140 Grahamstown, South Africa
关键词
D O I
10.1039/b704345g
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The synthesis, photophysical and photochemical properties of the 4-({3,4,5- tris-[2-(2- ethoxyethoxy)ethyloxy] benzyl} oxy) and 4-({3,4,5- tris-[ 2-( 2- ethoxyethoxy) ethyloxy] benzyl} thio) zinc( II) phthalocyanines are reported for the first time. The new compounds have been characterized by elemental analysis, IR, H-1 and C-13 NMR spectroscopy, electronic spectroscopy and mass spectra. General trends are described for photodegradation, singlet oxygen, fluorescence and triplet excited state quantum yields, and triplet state and fluorescence lifetimes of these compounds in dimethylsulfoxide (DMSO). The fluorescence of the complexes was quenched by benzoquinone (BQ). The effects of the substitution on the photophysical and photochemical parameters of the zinc( II) phthalocyanines ( 6, 7 and 8) are also reported. Photophysical and photochemical properties of phthalocyanine complexes are very useful for PDT applications. The substituted Zn( II) phthalocyanines showed high triplet and singlet oxygen quantum yields. High singlet oxygen quantum yields are very important for Type II mechanism. Thus, these complexes show potential as Type II photosensitizers.
引用
收藏
页码:3782 / 3791
页数:10
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