Abstract
Molecular tunnel junctions are organic devices miniaturized to the molecular scale. They serve as a versatile toolbox that can systematically examine charge transport behaviors at the atomic level. The electrical conductance of the molecular wire that bridges the two electrodes in a junction is significantly influenced by its chemical structure, and an intrinsically poor conductance is a major barrier for practical applications toward integrating individual molecules into electronic circuitry. Therefore, highly conjugated molecular wires are attractive as active components for the next-generation electronic devices, owing to the narrow highest occupied molecular orbital–lowest occupied molecular orbital gaps provided by their extended π-building blocks. This article aims to highlight the significance of highly conductive molecular wires in molecular electronics, the structures of which are inspired from conductive organic polymers, and presents a body of discussion on molecular wires exhibiting ultralow, zero, or inverted attenuation of tunneling probability at different lengths, along with future directions.
Original language | English |
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Article number | 2005711 |
Journal | Small |
Volume | 17 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2021 Mar 25 |
Bibliographical note
Funding Information:H.J.L., S.J.C., H.K., and X.H. contributed equally to this work. This research was supported by the NRF of Korea (NRF‐2019R1A2C2011003 and NRF‐2019R1A6A1A11044070).
Funding Information:
H.J.L., S.J.C., H.K., and X.H. contributed equally to this work. This research was supported by the NRF of Korea (NRF-2019R1A2C2011003 and NRF-2019R1A6A1A11044070).
Publisher Copyright:
© 2021 Wiley-VCH GmbH
Keywords
- highly conjugated molecular wires
- inverted attenuation
- molecular junctions
- ultralow tunneling attenuation
- weak length dependence
ASJC Scopus subject areas
- Biotechnology
- Biomaterials
- Chemistry(all)
- Materials Science(all)