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中文摘要：
采用超快时间分辨的荧光光谱技术测量了一种由柔性链连接的卟啉-钌二元体分子内的能量转移动力学过程.通过在钌的吸收峰（-453 nm）对二元体进行光激发,实验上观测到了从钌基团到卟啉基团的超快能量转移过程（-400ps）.而在卟啉的吸收峰（-400 nm）对二元体进行光激发,实验上没有观测到从卟啉基团到钌基团的能量转移.采用F rster理论对二元体系能量转移过程的产生机理进行了分析,结果表明,钌和卟啉之间的能量转移来源于基于光谱重叠的偶极-偶极相互作用.
英文摘要：
The ultrafast energy transfer has been investigated in a porphyrin （TPP） and polypyridyl ruthenium （ Ⅱ ） （Ru） hybrid, which is linked by a butyl chain by using time-resolved fluorescence spectroscopic technique. The experimental result shows that, when the excitation wavelength is at the absorption peak （ - 453 nm） of the Ru moiety, an ultrafast energy transfer occurs from Ru to porphyrin moiety （ - 400ps）. When the excitation wavelength （ - 400 nm） is at the absorption peak of the TPP moiety, no energy transfer is detected from TPP to Ru. The origin of the energy transfer has been analyzed by using Forster theory. The theoretical result shows that the energy transfer is attributed to dipole-dipole interaction based on the spectra overlap.
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