Modulation and Control of Charge Transport Through Single-Molecule Junctions

2017 ◽  
pp. 1-43 ◽  
Author(s):  
Kun Wan ◽  
Bingqian Xu
Keyword(s):  
Charge Transport ◽  
Single Molecule ◽  
Single Molecule Junctions ◽  
And Control

scholarly journals Mechanical single-molecule potentiometers with large switching factors from ortho-pentaphenylene foldamers

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jinshi Li ◽  
Pingchuan Shen ◽  
Shijie Zhen ◽  
Chun Tang ◽  
Yiling Ye ◽  
...  
Keyword(s):  
Charge Transport ◽  
Single Molecule ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Helical Structures ◽  
Anchoring Groups ◽  
Molecular Conductance ◽  
And Control ◽  
Helical Molecules ◽  
Shed Light

AbstractMolecular potentiometers that can indicate displacement-conductance relationship, and predict and control molecular conductance are of significant importance but rarely developed. Herein, single-molecule potentiometers are designed based on ortho-pentaphenylene. The ortho-pentaphenylene derivatives with anchoring groups adopt multiple folded conformers and undergo conformational interconversion in solutions. Solvent-sensitive multiple conductance originating from different conformers is recorded by scanning tunneling microscopy break junction technique. These pseudo-elastic folded molecules can be stretched and compressed by mechanical force along with a variable conductance by up to two orders of magnitude, providing an impressively higher switching factor (114) than the reported values (ca. 1~25). The multichannel conductance governed by through-space and through-bond conducting pathways is rationalized as the charge transport mechanism for the folded ortho-pentaphenylene derivatives. These findings shed light on exploring robust single-molecule potentiometers based on helical structures, and are conducive to fundamental understanding of charge transport in higher-order helical molecules.

Substitution Pattern Controlled Charge Transport in BN-Embedded Aromatics-Based Single-Molecule Junctions

2021 ◽  
Author(s):  
Hongxiang Li ◽  
Rui Wang ◽  
Kai Song ◽  
Caiyun Wei ◽  
Wenjing Hong ◽  
...  
Keyword(s):  
Charge Transport ◽  
Single Molecule ◽  
Molecular Devices ◽  
Substitution Pattern ◽  
Single Molecule Level ◽  
Single Molecule Junctions ◽  
Molecular Conductance

The understanding of charge transport at single-molecule level is a pre-requisite for the fabrication of molecular devices. Here, we systematically investigate the relation among molecular conductance, substitution pattern and stimuli...

scholarly journals Frontispiece: Tuning Charge Transport in Aromatic-Ring Single-Molecule Junctions via Ionic-Liquid Gating

2018 ◽  
Vol 57 (43) ◽  
Author(s):  
Na Xin ◽  
Xingxing Li ◽  
Chuancheng Jia ◽  
Yao Gong ◽  
Mingliang Li ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Charge Transport ◽  
Aromatic Ring ◽  
Single Molecule ◽  
Single Molecule Junctions

scholarly journals Photo-induced carbocation-enhanced charge transport in single-molecule junctions

2020 ◽  
Vol 11 (23) ◽  
pp. 6026-6030
Author(s):  
Zhongwu Bei ◽  
Yuan Huang ◽  
Yangwei Chen ◽  
Yiping Cao ◽  
Jin Li
Keyword(s):  
Scanning Tunneling Microscopy ◽  
Charge Transport ◽  
Single Molecule ◽  
Scanning Tunneling ◽  
Break Junction ◽  
Tunneling Microscopy ◽  
Single Molecule Junctions

We report the first example of photo-induced carbocation-enhanced charge transport in triphenylmethane junctions using the scanning tunneling microscopy break junction (STM-BJ) technique.

Charge Transport Characteristics of Diarylethene Photoswitching Single-Molecule Junctions

Nano Letters ◽  
2012 ◽  
Vol 12 (7) ◽  
pp. 3736-3742 ◽  
Author(s):  
Youngsang Kim ◽  
Thomas J. Hellmuth ◽  
Dmytro Sysoiev ◽  
Fabian Pauly ◽  
Torsten Pietsch ◽  
...  
Keyword(s):  
Charge Transport ◽  
Single Molecule ◽  
Single Molecule Junctions

scholarly journals Solvent-molecule interaction induced gating of charge transport through single-molecule junctions

2020 ◽  
Vol 65 (11) ◽  
pp. 944-950 ◽  
Author(s):  
Zheng Tang ◽  
Songjun Hou ◽  
Qingqing Wu ◽  
Zhibing Tan ◽  
Jueting Zheng ◽  
...  
Keyword(s):  
Charge Transport ◽  
Single Molecule ◽  
Solvent Molecule ◽  
Single Molecule Junctions ◽  
Molecule Interaction

Modularized Tuning of Charge Transport through Highly Twisted and Localized Single-Molecule Junctions

2019 ◽  
Vol 10 (12) ◽  
pp. 3453-3458 ◽  
Author(s):  
Zhixin Chen ◽  
Lijue Chen ◽  
Jiangpeng Liu ◽  
Ruihao Li ◽  
Chun Tang ◽  
...  
Keyword(s):  
Charge Transport ◽  
Single Molecule ◽  
Single Molecule Junctions

Effect of Electrode Orientations on Charge Transport in Alkanedithiol Single-Molecule Junctions

ACS Nano ◽  
2010 ◽  
Vol 4 (11) ◽  
pp. 6404-6408 ◽  
Author(s):  
Arijit Sen ◽  
Chao-Cheng Kaun
Keyword(s):  
Charge Transport ◽  
Single Molecule ◽  
Single Molecule Junctions
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