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Distinct armchair and zigzag charge transport through single polycyclic aromatics
In aromatic systems with large π-conjugated structures, armchair and zigzag configurations can affect each material’s electronic properties, determining their performance and generating certain quantum effects. Here, we explore the intrinsic effect of armchair and zigzag pathways on charge transport...
Autores principales: | , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10413665/ https://www.ncbi.nlm.nih.gov/pubmed/37256956 http://dx.doi.org/10.1126/sciadv.adg4346 |
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author | Zhang, Miao Wu, Zewen Jia, Hongxing Li, Peihui Yang, Lei Hao, Jie Wang, Jinying Zhang, Enyu Meng, Linan Yan, Zhuang Liu, Yi Du, Pingwu Kong, Xianghua Xiao, Shengxiong Jia, Chuancheng Guo, Xuefeng |
author_facet | Zhang, Miao Wu, Zewen Jia, Hongxing Li, Peihui Yang, Lei Hao, Jie Wang, Jinying Zhang, Enyu Meng, Linan Yan, Zhuang Liu, Yi Du, Pingwu Kong, Xianghua Xiao, Shengxiong Jia, Chuancheng Guo, Xuefeng |
author_sort | Zhang, Miao |
collection | PubMed |
description | In aromatic systems with large π-conjugated structures, armchair and zigzag configurations can affect each material’s electronic properties, determining their performance and generating certain quantum effects. Here, we explore the intrinsic effect of armchair and zigzag pathways on charge transport through single hexabenzocoronene molecules. Theoretical calculations and systematic experimental results from static carbon-based single-molecule junctions and dynamic scanning tunneling microscope break junctions show that charge carriers are preferentially transported along the hexabenzocoronene armchair pathway, and thus, the corresponding current through this pathway is approximately one order of magnitude higher than that through the zigzag pathway. In addition, the molecule with the zigzag pathway has a smaller energy gap. In combination with its lower off-state conductance, it shows a better field-effect performance because of its higher on-off ratio in electrical measurements. This study on charge transport pathways offers a useful perspective for understanding the electronic properties of π-conjugated systems and realizing high-performance molecular nanocircuits toward practical applications. |
format | Online Article Text |
id | pubmed-10413665 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-104136652023-08-11 Distinct armchair and zigzag charge transport through single polycyclic aromatics Zhang, Miao Wu, Zewen Jia, Hongxing Li, Peihui Yang, Lei Hao, Jie Wang, Jinying Zhang, Enyu Meng, Linan Yan, Zhuang Liu, Yi Du, Pingwu Kong, Xianghua Xiao, Shengxiong Jia, Chuancheng Guo, Xuefeng Sci Adv Physical and Materials Sciences In aromatic systems with large π-conjugated structures, armchair and zigzag configurations can affect each material’s electronic properties, determining their performance and generating certain quantum effects. Here, we explore the intrinsic effect of armchair and zigzag pathways on charge transport through single hexabenzocoronene molecules. Theoretical calculations and systematic experimental results from static carbon-based single-molecule junctions and dynamic scanning tunneling microscope break junctions show that charge carriers are preferentially transported along the hexabenzocoronene armchair pathway, and thus, the corresponding current through this pathway is approximately one order of magnitude higher than that through the zigzag pathway. In addition, the molecule with the zigzag pathway has a smaller energy gap. In combination with its lower off-state conductance, it shows a better field-effect performance because of its higher on-off ratio in electrical measurements. This study on charge transport pathways offers a useful perspective for understanding the electronic properties of π-conjugated systems and realizing high-performance molecular nanocircuits toward practical applications. American Association for the Advancement of Science 2023-05-31 /pmc/articles/PMC10413665/ /pubmed/37256956 http://dx.doi.org/10.1126/sciadv.adg4346 Text en Copyright © 2023 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Physical and Materials Sciences Zhang, Miao Wu, Zewen Jia, Hongxing Li, Peihui Yang, Lei Hao, Jie Wang, Jinying Zhang, Enyu Meng, Linan Yan, Zhuang Liu, Yi Du, Pingwu Kong, Xianghua Xiao, Shengxiong Jia, Chuancheng Guo, Xuefeng Distinct armchair and zigzag charge transport through single polycyclic aromatics |
title | Distinct armchair and zigzag charge transport through single polycyclic aromatics |
title_full | Distinct armchair and zigzag charge transport through single polycyclic aromatics |
title_fullStr | Distinct armchair and zigzag charge transport through single polycyclic aromatics |
title_full_unstemmed | Distinct armchair and zigzag charge transport through single polycyclic aromatics |
title_short | Distinct armchair and zigzag charge transport through single polycyclic aromatics |
title_sort | distinct armchair and zigzag charge transport through single polycyclic aromatics |
topic | Physical and Materials Sciences |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10413665/ https://www.ncbi.nlm.nih.gov/pubmed/37256956 http://dx.doi.org/10.1126/sciadv.adg4346 |
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