Distance-independent photoinduced energy transfer over 1.1 to 2.3 nm in ruthenium trisbipyridine-fullerene assemblies
Distance-independent photoinduced energy transfer over 1.1 to 2.3 nm in ruthenium trisbipyridine-fullerene assemblies
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DOI：
10.1039/b506837a
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发表时间：
2005-10-01
影响因子：
3.3
通讯作者：
Odobel, F
中科院分区：
文献类型：
--
作者：
Chaignon, F;Torroba, J;Odobel, F
通过对苯乙炔单元连接的三联吡啶Ru C-60二联体已被合成。它们表现出从Ru到C-60的快速能量转移，其速率与距离无关，从1.1 nm到2.3 nm。用桥局域激发态的跳跃机制解释了这一结果。事实上，光谱数据证明，对于最长的桥，这种状态的能量低于基于Ru的MLCT状态。
Ruthenium trisbipyridine C-60 dyads linked via para-phenyleneethynylene units have been prepared. They displayed a rapid energy transfer from Ru to C-60 with a rate that was independent of distance, from 1.1 to 2.3 nm. The results are explained by a hopping mechanism involving a bridge-localized excited-state. In fact, for the longest bridge this state was lower in energy than the Ru-based MLCT state, as evidenced by the spectroscopic data.