Effect of Side Chains on Charge Transfer in Quaterthiophene-Naphthalene Diimide Based Donor-Bridge-Acceptor Dyads
Effect of Side Chains on Charge Transfer in Quaterthiophene-Naphthalene Diimide Based Donor-Bridge-Acceptor Dyads
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DOI：
10.1080/10601325.2011.620473
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发表时间：
2011-01-01
影响因子：
2.5
通讯作者：
Venkataraman, D.
中科院分区：
文献类型：
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作者：
Bheemaraju, Amarnath;Pourmand, Mahshid;Venkataraman, D.
我们研究了侧链对含四元噻吩（QT）供体和萘二亚胺（NDI）受体二元体的电荷转移动力学的影响。使用柔性连接剂将供体和受体共价连接。以含己基侧链的季噻吩和含碳氢化合物、氟碳化合物、支链或极性侧链的萘二亚胺为原料合成了4个二联体（1-4）。紫外-可见光谱表明，这些二体存在供体-受体复合物。时间分辨荧光（TRF）衰减研究表明，在供体激发后，所有双体的荧光都迅速猝灭。我们发现NDI上的侧链没有改变溶液中的淬火速率。
We have probed the effect of side chains on the charge transfer dynamics in dyads containing quaterthiophene (QT) donor and naphthalene diimide (NDI) acceptor. The donor and the acceptor are covalently linked using a flexible linker. Four dyads (1-4) were synthesized with the quaterthiophene bearing hexyl side chain and the naphthalene diimide bearing hydrocarbon, fluorocarbon, branched or polar side chains. The UV-Vis spectra for these dyads showed the existence of a donor-acceptor complex. The time-resolved fluorescence (TRF) decay studies show a rapid quenching of fluorescence in all the dyads upon excitation of the donor. We found that the side chains on the NDI did not alter the quenching rates in solution.