【摘要】 报道了16种含哌嗪或含哌啶四取代酞菁金属配合物{R4PcM,R=2-[4-(2-磺基乙基)哌嗪-1-基]乙氧基(SPEO—)、2-(哌啶-1-基)乙氧基(PEO—);取代位置分别在α位和β位;M=Zn(Ⅱ),Ni(Ⅱ),Co(Ⅱ),Cu(Ⅱ)}的UV-Vis吸收光谱和荧光发射光谱的测定,探讨了中心金属离子、取代基种类及其取代位置、溶剂等因素对酞菁金属配合物UV-Vis吸收光谱和荧光发射光谱性质的影响。结果表明:R4PcM的Q带λmax落在681～718nm范围内,与相同中心金属离子的无取代酞菁金属配合物(669～671nm)比较都发生了不同程度的红移,荧光发射光谱与UV-Vis吸收光谱呈镜像关系,特别的是两种β位取代中心金属离子为Zn(Ⅱ)的酞菁金属配合物[β-(SPEO)4PcZn,β-(PEO)4PcZn]具有极高的摩尔消光系数、较大的荧光量子产率和较长的荧光寿命,有望开发成新型的光动力诊疗用光敏剂。更多还原

【Abstract】 The UV-Visible absorption spectra and the fluorescence emission spectra of sixteen tetra-substituted metallo-phthalocyanine complexes {R4PcM,where R=2-[4-(2-sulfonic ethyl)piperazin-1-] ethoxyl(SPEO—),2-(piperidin-1-yl)ethoxyl(PEO—);substitution position at α-position and β-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(λmax)of Q-band and its molar extinction coefficient(ε),and those of the fluorescence emission spectra such as fluorescence quantum yield(ΦF),fluorescence lifetime(τ) and excited state energy(Es)were studied.The results showed that the λmax of Q-band 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 R4PcM possessed a very high molar extinction coefficient up to 105 L·mol-1·cm-1.And the UV-Vis absorption spectra and the fluorescence emission spectra of all complexes exhibited mirror shape concurrently.Two β-substituted zinc phthalocyanine complexes with formula β-(SPEO)4PcZn and β-(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).更多还原