| 外场操控单分子的电子转移动力学特性 |
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| 引用本文： | 肖连团,贾锁堂.外场操控单分子的电子转移动力学特性[J].山西大学学报(自然科学版),2012,35(2):255-261. |
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| 作者姓名： | 肖连团 贾锁堂 |
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| 作者单位： | 量子光学与光量子器件国家重点实验室,山西大学激光光谱实验室,山西太原030006 |
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| 基金项目： | 国家重点基础研究发展计划，国家自然科学基金，国家基金创新团队，山西省科技基础条件平台建设项目，山西省高等学校中青年拔尖创新人才支持计划，山西省高等学校优秀创新团队支持计划资助创新团队资助的课题 |
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| 摘 要： | 研究单分子的电子转移动力学特性并进行可靠的量子操控是应用单分子于量子信息领域的先决条件.利用电场改变单分子与周围电子受体之间的库仑势垒,操控PMMA聚合物薄膜中的染料SR单分子的电子转移,发现分子荧光对电场响应存在增强效应.将电流引入染料SR单分子/ITO半导体纳米粒子系统中,观察到了电流操控下的单分子荧光强度熄灭效应,电子转移率达到91％.
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| 关 键 词： | 单分子 外场 动力学 操控 |
Manipulation for the Electron Transfer Dynamics of Single Molecules by Using External Filed |
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| XIAO Lian-tuan
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JIA Suo-tang.Manipulation for the Electron Transfer Dynamics of Single Molecules by Using External Filed[J].Journal of Shanxi University (Natural Science Edition),2012,35(2):255-261. |
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| Authors: | XIAO Lian-tuan JIA Suo-tang |
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| Institution: | (State Key Laboratory of Quantum Optics and Quantum Optics Device, Laser Spectroscopy Laboratory,Shanxi University,Taiyuan 030006,China) |
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| Abstract: | The measurement and manipulation for the electron transfer dynamics of single molecule are the key conditions for its application in quantum information.The electron transfer dynamics of single squaraine-derived rotaxane(SR) dye molecules embedded in a poly(methyl methacrylate) matrix is modulated by the electric field.The fluorescence intensity enhancement is found as the Coulombic barrier changed between the molecule and its surrounding electron acceptors.By applying the external electric current to the SR molecule/indium tin oxide(ITO) nano-particle system,it is shown that the single-molecule fluoresces can be effectively quenched The electron transfer rate can be reached to 91%. |
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| Keywords: | single molecule external filed dynamics manipulation |
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