Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/127228
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Constructing dual-molecule junctions to probe intermolecular crosstalk |
Author: | Wu, X.-H. Chen, F. Yan, F. Pei, L.-Q. Hou, R. Horsley, J.R. Abell, A.D. Zhou, X.-S. Yu, J. Li, D.-F. Jin, S. Mao, B.-W. |
Citation: | ACS Applied Materials and Interfaces, 2020; 12(27):30584-30590 |
Publisher: | American Chemical Society |
Issue Date: | 2020 |
ISSN: | 1944-8244 1944-8252 |
Statement of Responsibility: | Xiao-Hui Wu, Fang Chen, Feng Yan ... John R. Horsley, Andrew D. Abell ... Jingxian Yu ... et al. |
Abstract: | Understanding and controlling charge transport across multiple parallel molecules are fundamental to the creation of innovative functional electronic components, as future molecular devices will likely be multimolecular. The smallest possible molecular ensemble to address this challenge is a dual-molecule junction device, which has potential to unravel the effects of intermolecular crosstalk on electronic transport at the molecular level that cannot be elucidated using either conventional single-molecule or self-assembled monolayer (SAM) techniques. Herein, we demonstrate the fabrication of a scanning tunneling microscopy (STM) dual-molecule junction device, which utilizes noncovalent interactions and allows for direct comparison to the conventional STM single-molecule device. STM-break junction (BJ) measurements reveal a decrease in conductance of 10% per molecule from the dual-molecule to the single-molecule junction device. Quantum transport simulations indicate that this decrease is attributable to intermolecular crosstalk (i.e., intermolecular π-π interactions), with possible contributions from substrate-mediated coupling (i.e., molecule-electrode). This study provides the first experimental evidence to interpret intermolecular crosstalk in electronic transport at the STM-BJ level and translates the experimental observations into meaningful molecular information to enhance our fundamental knowledge of this subject matter. This approach is pertinent to the design and development of future multimolecular electronic components and also to other dual-molecular systems where such crosstalk is mediated by various noncovalent intermolecular interactions (e.g., electrostatic and hydrogen bonding). |
Keywords: | STM-BJ dual-molecule junction noncovalent interactions quantum transport simulation supramolecular complex |
Rights: | © 2020 American Chemical Society |
DOI: | 10.1021/acsami.0c01556 |
Grant ID: | http://purl.org/au-research/grants/arc/CE140100003 http://purl.org/au-research/grants/arc/DP180101581 |
Published version: | http://dx.doi.org/10.1021/acsami.0c01556 |
Appears in Collections: | Aurora harvest 8 Physics publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.