Electron Transfer in Nanoparticle Dyads Assembled on a Colloidal Template
Electron Transfer in Nanoparticle Dyads Assembled on a Colloidal Template
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DOI：
10.1021/jacs.6b06991
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发表时间：
2016-10-12
影响因子：
15
通讯作者：
Waldeck, David H.
中科院分区：
文献类型：
--
作者：
Graff, Brittney M.;Bloom, Brian P.;Waldeck, David H.
这项工作展示了如何创建共价结合的纳米粒子二联体组装体上的胶体模板和研究光诱导电荷转移。新的结果报告的电子转移速率的变化与纳米粒子间的距离和能带偏移的纳米粒子（反应吉布斯能）。实验结果表明，距离依赖性是一致的电子隧穿机制。的能带偏移率的依赖性被发现是一致的马库斯理论，只要一个执行的总和在最终的电子状态。这些结果表明，我们的理解的电子转移在分子供体桥受体组件可以翻译为描述纳米粒子桥纳米粒子组件。
This work shows how to create covalently bound nanoparticle dyad assemblies on a colloidal template and studies photoinduced charge transfer in them. New results are reported for how the electron-transfer rate changes with the inter-nanoparticle distance and the energy band offset of the nanoparticles (reaction Gibbs energy). The experimental findings show that the distance dependence is consistent with an electron tunneling mechanism. The dependence of the rate on the energy band offset is found to be consistent with Marcus theory, as long as one performs a sum over final electronic states. These results indicate that our understanding of electron transfer in molecular donor-bridge-acceptor assemblies can be translated to describe nanoparticle-bridge-nanoparticle assemblies.