Huang Zi-yang, Huang Jian-dong, Chen Nai-sheng, Huang Jin-ling
Institute of Research on Functional Materials, Fuzhou University, Fuzhou 350002, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2009 May;29(5):1354-7.
The UV-Visible absorption spectra and the fluorescence emission spectra of sixteen tetra-substituted metallo-phthalocyanine complexes {R4 PcM, where R = 2-[4-(2-sulfonic ethyl) piperazin-1-] ethoxyl (SPEO--), 2-(piperidin-1-yl) ethoxyl (PEO--); substitution position at alpha-position and beta-position of phthalocyanine ring; M = Zn(II), Ni(II), Co(II) and Cu(II)} were measured. The influence of different central ion, substituted group and its position, as well as different solvent on the Q-band of phthalocyanine complex in its UV-Vis absorption spectra was investigated. The influence of different central ion, substituted group and its position on the fluorescence emission spectra was discussed. Some properties of the UV-Vis absorption spectra such as the maximum absorption wavelength (lamdamax ) of Q-band and its molar extinction coefficient (epsilon), and those of the fluorescence emission spectra such as fluorescence quantum yield (phiF), fluorescence lifetime (r) and excited state energy (Es) were studied. The results showed that the lamdamax of Qband of all complexes were located at 681-718 nm, which had a distinct red shift in contrast with unsubstituted metallophthalocyanines (669-671 nm). All complexes of R4 PcM possessed a very high molar extinction coefficient up to 10(5) L x mol(-1) x cm(-1). And the UV-Vis absorption spectra and the fluorescence emission spectra of all complexes exhibited mirror shape concurrently. Two beta-substituted zinc phthalocyanine complexes with formula beta-(SPEO)4PcZn and beta-(PEO)4PcZn possessed very high molar extinction coefficient, fluorescence quantum yield and fluorescence lifetime specially. Therefore, it is hoped that these two would be developing to be new photosensitizers for photodynamic therapy (PDT)and photodynamic diagnosis (PDD).
测定了16种四取代金属酞菁配合物{R4PcM，其中R = 2-[4-(2-磺酸乙基)哌嗪-1-]乙氧基(SPEO--)，2-(哌啶-1-基)乙氧基(PEO--)；酞菁环α位和β位的取代位置；M = Zn(II)、Ni(II)、Co(II)和Cu(II)}的紫外可见吸收光谱和荧光发射光谱。研究了不同中心离子、取代基团及其位置以及不同溶剂对酞菁配合物紫外可见吸收光谱中Q带的影响。讨论了不同中心离子、取代基团及其位置对荧光发射光谱的影响。研究了紫外可见吸收光谱的一些性质，如Q带的最大吸收波长(λmax)及其摩尔消光系数(ε)，以及荧光发射光谱的一些性质，如荧光量子产率(φF)、荧光寿命(τ)和激发态能量(Es)。结果表明，所有配合物Q带的λmax位于681 - 718 nm，与未取代的金属酞菁(669 - 671 nm)相比有明显的红移。所有R4PcM配合物都具有高达10(5) L·mol(-1)·cm(-1)的非常高的摩尔消光系数。并且所有配合物的紫外可见吸收光谱和荧光发射光谱同时呈现镜像形状。两种分子式为β-(SPEO)4PcZn和β-(PEO)4PcZn的β位取代锌酞菁配合物特别具有非常高的摩尔消光系数、荧光量子产率和荧光寿命。因此，希望这两种配合物能够发展成为用于光动力疗法(PDT)和光动力诊断(PDD)的新型光敏剂。
