Dual‐Vibration‐Assisted Charge Transport Through Hexabenzocoronene in Single‐Molecule Junctions

Gaining deep understanding and effective regulation of the charge transport mechanism within molecular junctions is essential for the development of electronic devices. In this work, a series of hexabenzocoronene-based single-molecule junctions are successfully constructed, and their temperature-dependent charge transport properties are studied. It is found that rotational vibrations of both benzene and hexabenzocoronene rings are sequentially excited as the temperature increases, and the electron-vibration coupling enhances charge tunneling. In addition, the transition temperature between distinct vibration-assisted tunneling modes and the activation energies show strong correlations with the molecular vibration frequency and molecular length. This study unveils the distinct dual-vibration-assisted molecular tunneling mechanism, significantly enhancing the ability to precisely control molecular charge transport and develop functional molecular devices.

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Publication Details

Journal
Advanced Science
Published
2024-11-20
DOI
https://doi.org/10.1002/advs.202408310
Citations
4
Primary Topic
Molecular Junctions and Nanostructures
Type
article
Field-Weighted Citation Impact
0.83

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Dual‐Vibration‐Assisted Charge Transport Through Hexabenzocoronene in Single‐Molecule Junctions

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4 citations
Advanced Science
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Dual‐Vibration‐Assisted Charge Transport Through Hexabenzocoronene in Single‐Molecule Junctions

Chuancheng Jia, Hongxing Jia, Jie Hao, Pingwu Du, Li Zhou, Xuefeng Guo, Miao Zhang, Baoyi Wang, Jinying Wang, Xinmiao Xie
article en
4 citations

Abstract

Gaining deep understanding and effective regulation of the charge transport mechanism within molecular junctions is essential for the development of electronic devices. In this work, a series of hexabenzocoronene-based single-molecule junctions are successfully constructed, and their temperature-dependent charge transport properties are studied. It is found that rotational vibrations of both benzene and hexabenzocoronene rings are sequentially excited as the temperature increases, and the electron-vibration coupling enhances charge tunneling. In addition, the transition temperature between distinct vibration-assisted tunneling modes and the activation energies show strong correlations with the molecular vibration frequency and molecular length. This study unveils the distinct dual-vibration-assisted molecular tunneling mechanism, significantly enhancing the ability to precisely control molecular charge transport and develop functional molecular devices.

Advanced ScienceVol. 12(2)
University of Science and Technology of China (CN), Chongqing University (CN), Peking University (CN), Nankai University (CN), Beijing National Laboratory for Molecular Sciences (CN), Collaborative Innovation Center of Chemistry for Energy Materials (CN), Imaging Center (US)
National Natural Science Foundation of China, Natural Science Foundation of Beijing Municipality, National Key Research and Development Program of China, Beijing National Laboratory for Molecular Sciences
Openalex Percentile: Top 26%
Molecular Junctions and Nanostructures
0.83
DOIOpen Access PDFOpenAlex
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