Supramolecular control of charge transport in molecular wires
Supramolecular control of charge transport in molecular wires
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DOI：
10.1021/ja0751274
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发表时间：
2007-11-07
影响因子：
15
通讯作者：
Anderson, Harry L.
中科院分区：
文献类型：
--
作者：
Grozema, Ferdinand C.;Houarner-Rassin, Coralie;Anderson, Harry L.
用脉冲辐射分解时间分辨微波电导率法研究了稀溶液中正电荷沿卟啉分子线的输运。正电荷沿分离单链卟啉线的迁移率为0.084 cm(2)/(V s)。添加4,4'-联吡啶导致形成双链阶梯复合物，将每条聚合物链锁定为更平面的结构，从而增强了卟啉-卟啉偶联，导致载流子迁移率提高了一个数量级，达到0.91 cm(2)/(V S)。
The transport of positive charges along porphyrin-based molecular wires has been probed in dilute solution using pulse radiolysis time-resolved microwave conductivity. The mobility of positive charges along isolated single-strand porphyrin wires was found to be 0.084 cm(2)/(V s). Addition of 4,4'-bipyridyl leads to the formation of a double-strand ladder complex, locking each polymer strand into a more planar structure and thus enhancing the porphyrin-porphyrin pi-conjugation, leading to an increase in the charge carrier mobility by an order of magnitude to 0.91 cm(2)/(V S).