globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.03.012
论文题名:
Solvent-molecule interaction induced gating of charge transport through single-molecule junctions
作者: Tang Z.; Hou S.; Wu Q.; Tan Z.; Zheng J.; Li R.; Liu J.; Yang Y.; Sadeghi H.; Shi J.; Grace I.; Lambert C.J.; Hong W.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期:11
起始页码: 944
结束页码: 950
语种: 英语
中文关键词: Break junctions ; Molecular electronics ; Single-molecule conductance ; Solvent-induced gating
英文关键词: Carrier transport ; Molecular electronics ; Molecular orbitals ; Solvents ; Break junctions ; Electrical conductance ; Mechanically controllable break junctions ; Molecular orbital energy ; Single molecule conductance ; Single-molecule junctions ; Solvent induced ; Theoretical calculations ; Molecules
英文摘要: To explore solvent gating of single-molecule electrical conductance due to solvent-molecule interactions, charge transport through single-molecule junctions with different anchoring groups in various solvent environments was measured by using the mechanically controllable break junction technique. We found that the conductance of single-molecule junctions can be tuned by nearly an order of magnitude by varying the polarity of solvent. Furthermore, gating efficiency due to solvent–molecule interactions was found to be dependent on the choice of the anchor group. Theoretical calculations revealed that the polar solvent shifted the molecular-orbital energies, based on the coupling strength of the anchor groups. For weakly coupled molecular junctions, the polar solvent–molecule interaction was observed to reduce the energy gap between the molecular orbital and the Fermi level of the electrode and shifted the molecular orbitals. This resulted in a more significant gating effect than that of the strongly coupled molecules. This study suggested that solvent–molecule interaction can significantly affect the charge transport through single-molecule junctions. © 2020 Science China Press
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170047
Appears in Collections:气候变化与战略

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作者单位: State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China; Department of Physics, Lancaster University, Lancaster, LA1 4YB, United Kingdom

Recommended Citation:
Tang Z.,Hou S.,Wu Q.,et al. Solvent-molecule interaction induced gating of charge transport through single-molecule junctions[J]. Science Bulletin,2020-01-01,65(11)
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