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采用激光闪光光解技术测量了5,15-二(五氟苯基),10-苯基Corrole,5,10,15-三(五氟苯基)Corrole及其相应Ga配合物的三重态瞬态吸收光谱和动力学弛豫过程.测量结果表明,四种Corrole样品在440-540 nm波长范围内具有三重态吸收信号且吸收峰位于450 nm.无氧条件下,金属Ga Corrole的三重态寿命比对应的自由Corrole三重态寿命短;有氧条件下,则反之.由此推测,金属Ga原子的插入减缓了氧对Corrole分子三重态的猝灭速率.利用稳态红外发光法测量了四种Corrole样品的单线态氧稳态发光光谱.计算结果显示,金属Ga原子的插入使得Corrole的单线态氧量子产率有所下降.结果表明,金属Ga原子产生的重原子效应对Corrole三重态动力学和单线态氧的产生有一定的影响.
The triplet states of 5,15-bis (pentafluorophenyl), 10-phenyl Corrole, 5,10,15-tris (pentafluorophenyl) Corrole and their corresponding Ga complexes were measured by laser flash photolysis State absorption spectroscopy and kinetic relaxation process.The measurement results show that the four Corrole samples have triplet absorption signals in the wavelength range of 440-540 nm and absorption peaks at 450 nm.The triplet state lifetime of the metal Ga Corrole under anaerobic conditions Which is shorter than that of the corresponding free Corrole triplet state and vice versa under aerobic conditions.It is presumed that the insertion of metal Ga atoms slows the quenching rate of oxygen to the triplet state of Corrole molecule.Using steady state infrared luminescence method, Corrole sample.The calculated results show that the singlet oxygen quantum yield of Corrole decreases with the insertion of metal Ga atoms.The results show that the heavy atom effect of metal Ga atoms has a significant influence on Corrole triplet kinetics And singlet oxygen production have a certain impact.