Voltage-induced conformational changes and current control in charge transfer through molecules

Lars Kecke; Joachim Ankerhold

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Voltage-induced conformational changes and current control in charge transfer through molecules

机译：电压引起的分子构象变化和电流控制

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Transport through molecular contacts with a sluggish intramolecular vibrational mode strongly coupled to excess charges is studied far from equilibrium. A Born-Oppenheimer approximation in steady state reveals voltage-dependent energy surfaces, which cause abrupt conformational changes of the molecular backbone. These are directly related to transitions between current plateaus, which are relatively robust against thermal fluctuations. In a regime accessible in experiments this allows the operation of a molecular junction as a current switch or as a molecular machine in form of a valve controlled by time-dependent bias and gate voltages.

机译：通过与弱电荷强烈耦合的缓慢的分子内振动模式通过分子接触的传输远未达到平衡。稳态下的Born-Oppenheimer近似揭示了电压依赖性能量表面，该能量表面引起分子主链的构象突变。这些直接与当前平稳段之间的过渡有关，这些过渡对于热波动相对稳定。在实验中可以使用的方案中，这允许分子结作为电流开关或作为由时间相关的偏置和栅极电压控制的阀形式的分子机器运行。

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《Physical review》 |2012年第24期|p.245442.1-245442.6|共6页
作者
Lars Kecke; Joachim Ankerhold;
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作者单位

Institut fuer theoretische Physik, Universitaet Ulm, Albert-Einstein-Allee 11, D-89069 Ulm, Germany;

Institut fuer theoretische Physik, Universitaet Ulm, Albert-Einstein-Allee 11, D-89069 Ulm, Germany;

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molecular electronic devices; coulomb blockade; single-electron tunneling; electronic transport in nanoscale materials and structures; micro- and nano-electromechanical systems (MEMS/NEMS) and devices;

机译：分子电子器件库仑封锁;单电子隧穿纳米材料和结构中的电子传输;微纳机电系统（MEMS / NEMS）和设备;

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机译：供体受体构象的光学和极性控制及其在热活化的延迟荧光分子中的电荷转移状态
2. A novel route to get functionality in nanoelectronics: Controlling the charge transport by the subtle impact of the coverage of self-assembled monolayers on the conformation of floppy molecules adsorbed on metallic electrodes [J] . Baldea Ioan Applied Surface Science . 2019,第APRa1期

机译：一种获得纳米电子学功能的新颖途径：通过自组装单分子膜的覆盖范围对吸附在金属电极上的软盘分子构象的细微影响来控制电荷传输
3. Correlation of Kondo effect and molecular conformation of the acceptor molecule in the TTF-TCNE charge transfer complex [J] . Stoll Paul, Lotze Christian, Ladenthin Janina N., Journal of Physics. Condensed Matter . 2018,第45期

机译：TTF-TCNE电荷转移复合物中受体分子的Kondo效应和分子构象的相关性
4. Anomalous inhomogeneous broadening of electronic spectra and conformational states of charge transfer molecules [C] . V. I. Tomin Atomic and Molecular Physics . 2004

机译：电子光谱和电荷转移分子构象态的异常不均匀扩宽
5. (1) Flipped-out and switched-on ionophores. (2) Conformationally controlled intramolecular charge transfer complexes. (3) Intramolecular charge transfer ionophores [D] . Durocher, David Thomas. 1990

机译：（1）翻转并打开离子载体。（2）构象控制的分子内电荷转移复合物。（3）分子内电荷转移离子载体
6. Controlling the Conformational Changes in Donor–Acceptor 4-Dendralenes through Intramolecular Charge-Transfer Processes [O] . Alexander L Kanibolotsky, John C Forgie, Greg J McEntee, -1

机译：通过分子内电荷转移过程控制供体-受体4-二烯的构象变化
7. Voltage induced conformational changes and current control in charge transfer through molecules [O] . Kecke, Lars, Ankerhold, Joachim 2012

机译：电压引起的构象变化和电荷控制通过分子转移
8. Controlling Protein Conformations to Explore Unprecedented Material Properties by Single-Molecule Surgery. [R] . Lu, H. P. 2012

机译：通过单分子手术控制蛋白质构象以探索前所未有的材料特性。

Voltage-induced conformational changes and current control in charge transfer through molecules

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