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稀土金属卟啉的荧光光谱研究
THE FLUORESCENCE STUDY ON METALLOPORPHINS OF RARE EARTH ELEMENTS
【摘要】 用苯或乙醇为溶剂,在室温下测得了数种o-ClTPP和TPP稀土金属络合物的荧光发射光谱和荧光激发光谱。荧光激发光谱与相应吸收光谱相对应。除Y(Ⅲ)和Lu(Ⅲ)络合物的荧光量子产率稍大外,其它Ln(Ⅲ)络合物的荧光量子产率都在10-4数量级。o-ClTPP系列络合物的荧光量子产率不小于TPP系列相应的稀土金属络合物。不同络合物的自然辐射寿命差别不显著。
【Abstract】 Room temperature fluorescence emission and excitation spectra of rare earth metallocomplexes of o-ClTPP and TPP have been measured. The fluorescence excitation spectra are basically equivalent to the corresponding absorption spectra. The values of fluorescence quantum yield (φf) of all the Ln (Ⅲ) complexes are 10-4 in order of magnitude except the Lu (Ⅲ) and Y (Ⅲ)complexes which have somewhat higher values of φf. We have found that the φf values of o-ClTPP complexes are not lower than that of the corresponding TPP complexes. The natural radiative lifetimes of different complexes do not differ significantly.
- 【文献出处】 光谱学与光谱分析 ,Spectroscopy and Spectral Analysis , 编辑部邮箱 ,1986年05期
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