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Zeng BF, Wang G, Qian QZ, Chen ZX, Zhang XG, Lu ZX, Zhao SQ, Feng AN, Shi J, Yang Y, Hong W. Selective Fabrication of Single-Molecule Junctions by Interface Engineering. Small 2020; 16:e2004720. [PMID: 33155382 DOI: 10.1002/smll.202004720] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/14/2020] [Indexed: 06/11/2023]
Abstract
Recent progress in addressing electrically driven single-molecule behaviors has opened up a path toward the controllable fabrication of molecular devices. Herein, the selective fabrication of single-molecule junctions is achieved by employing the external electric field. For molecular junctions with methylthio (-SMe), thioacetate (-SAc), amine (-NH2 ), and pyridyl (-PY), the evolution of their formation probabilities along with the electric field is extracted from the plateau analysis of individual single-molecule break junction traces. With the increase of the electric field, the SMe-anchored molecules show a different trend in the formation probability compared to the other molecular junctions, which is consistent with the density functional theory calculations. Furthermore, switching from an SMe-anchored junction to an SAc-anchored junction is realized by altering the electric field in a mixed solution. The results in this work provide a new approach to the controllable fabrication and modulation of single-molecule junctions and other bottom-up nanodevices at molecular scales.
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Affiliation(s)
- Biao-Feng Zeng
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, College of Chemistry and Chemical Engineering and State Key Laboratory of Physical Chemistry of Solid Surfaces, IKKEM, iChEM, Xiamen University, Xiamen, 361005, China
| | - Gan Wang
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, College of Chemistry and Chemical Engineering and State Key Laboratory of Physical Chemistry of Solid Surfaces, IKKEM, iChEM, Xiamen University, Xiamen, 361005, China
| | - Qiao-Zan Qian
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, College of Chemistry and Chemical Engineering and State Key Laboratory of Physical Chemistry of Solid Surfaces, IKKEM, iChEM, Xiamen University, Xiamen, 361005, China
| | - Zhi-Xin Chen
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, College of Chemistry and Chemical Engineering and State Key Laboratory of Physical Chemistry of Solid Surfaces, IKKEM, iChEM, Xiamen University, Xiamen, 361005, China
| | - Xia-Guang Zhang
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, China
| | - Zhi-Xing Lu
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, College of Chemistry and Chemical Engineering and State Key Laboratory of Physical Chemistry of Solid Surfaces, IKKEM, iChEM, Xiamen University, Xiamen, 361005, China
| | - Shi-Qiang Zhao
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, College of Chemistry and Chemical Engineering and State Key Laboratory of Physical Chemistry of Solid Surfaces, IKKEM, iChEM, Xiamen University, Xiamen, 361005, China
| | - An-Ni Feng
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, College of Chemistry and Chemical Engineering and State Key Laboratory of Physical Chemistry of Solid Surfaces, IKKEM, iChEM, Xiamen University, Xiamen, 361005, China
| | - Jia Shi
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, College of Chemistry and Chemical Engineering and State Key Laboratory of Physical Chemistry of Solid Surfaces, IKKEM, iChEM, Xiamen University, Xiamen, 361005, China
| | - Yang Yang
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, College of Chemistry and Chemical Engineering and State Key Laboratory of Physical Chemistry of Solid Surfaces, IKKEM, iChEM, Xiamen University, Xiamen, 361005, China
| | - Wenjing Hong
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, College of Chemistry and Chemical Engineering and State Key Laboratory of Physical Chemistry of Solid Surfaces, IKKEM, iChEM, Xiamen University, Xiamen, 361005, China
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