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通过轴向配位作用构造了ZnTPP-H2(m-py)TPP卟啉二元体系,研究了配位二聚体的可见吸收光谱和荧光发射光谱特性,考察了二聚体分子内的能量传递过程,观察到能量从激发态ZnTPP*流向H2(m-py)TPP。作为对比,研究了ZnTPP-py体系的可见吸收光谱和荧光发射光谱。轴向配位的吡啶引起了ZnTPP荧光光谱明显红移,没有分子内的能量转移过程发生。用吸收光谱和荧光光谱方法计算了加合反应的平衡常数,得到了基本一致的结果。
The ZnTPP-H2 (m-py) TPP porphyrin binary system was constructed by axial coordination, and the visible absorption and fluorescence emission spectra of the coordination dimer were investigated. The energy transfer in dimeric molecules Process, the energy was observed to flow from the excited state ZnTPP * to H2 (m-py) TPP. As a comparison, the visible absorption and fluorescence emission spectra of ZnTPP-py system were studied. Axially coordinated pyridine caused a significant red shift of ZnTPP fluorescence spectra, and no intramolecular energy transfer occurred. The equilibrium constants of the addition reaction were calculated by absorption and fluorescence spectroscopy. The results were basically consistent.