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合成了中位邻硝基四苯基四苯并卟啉的Fe3+、Co2 +和Ni2 +配合物 ,并对其电子吸收光谱和荧光发射光谱进行了研究。结果表明 ,由于极性溶剂分子在轴向配位 ,溶剂的极性对卟啉铁和卟啉钴的电子吸收光谱有较大影响。Co2 +和Ni2 +配合物均可发射较强的荧光。其中卟啉镍发射荧光是由于 (ππ )激发单重态与 (dd)激发单重态处于一热平衡态 ,而卟啉钴发射荧光是由于 (ππ )激发单重态与中心金属的多重态之间弱的相互作用
The complexes of Fe3 +, Co2 + and Ni2 + of the ortho-nitrotetraphenyl tetrabenzoporphyrins were synthesized and their electronic absorption spectra and fluorescence emission spectra were studied. The results show that due to the polar solvent molecules in the axial coordination, the polarity of the solvent on the porphyrin iron and cobalt porphyrin electronic absorption spectra have a greater impact. Co2 + and Ni2 + complexes can emit strong fluorescence. The fluorescence of porphyrin nickel is due to the (ππ) excited singlet state and (dd) excited singlet state are in a thermal equilibrium state, while the porphyrin cobalt emission fluorescence is due to (ππ) excitation singlet state and the central metal multiplet state Weak interaction