Achieving Ultralow, Zero, and Inverted Tunneling Attenuation Coefficients in Molecular Wires with Extended Conjugation.

Autor: Lee HJ; Department of Chemistry, Korea University, Seoul, 02841, South Korea., Cho SJ; Department of Chemistry, Korea University, Seoul, 02841, South Korea., Kang H; Department of Chemistry, Korea University, Seoul, 02841, South Korea., He X; Department of Chemistry, Korea University, Seoul, 02841, South Korea., Yoon HJ; Department of Chemistry, Korea University, Seoul, 02841, South Korea.
Jazyk: angličtina
Zdroj: Small (Weinheim an der Bergstrasse, Germany) [Small] 2021 Mar; Vol. 17 (12), pp. e2005711. Date of Electronic Publication: 2021 Feb 04.
DOI: 10.1002/smll.202005711
Abstrakt: 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.
(© 2021 Wiley-VCH GmbH.)
Databáze: MEDLINE
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