Quantifying the conductivity of a single polyene chain by lifting with an STM tip

Sifan You, Cuiju Yu, Yixuan Gao, Xuechao Li, Guyue Peng, Kaifeng Niu, Jiahao Xi, Chaojie Xu, Shixuan Du, Xingxing Li (), Jinlong Yang and Lifeng Chi ()
Additional contact information
Sifan You: Soochow University
Cuiju Yu: University of Science and Technology of China
Yixuan Gao: Chinese Academy of Sciences
Xuechao Li: Soochow University
Guyue Peng: Soochow University
Kaifeng Niu: Linköping University
Jiahao Xi: Soochow University
Chaojie Xu: Soochow University
Shixuan Du: Chinese Academy of Sciences
Xingxing Li: University of Science and Technology of China
Jinlong Yang: University of Science and Technology of China
Lifeng Chi: Soochow University

Nature Communications, 2024, vol. 15, issue 1, 1-8

Abstract: Abstract Conjugated polymers are promising candidates for molecular wires in nanoelectronics, with flexibility in mechanics, stability in chemistry and variety in electrical conductivity. Polyene, as a segment of polyacetylene, is a typical conjugated polymer with straightforward structure and wide-range adjustable conductance. To obtain atomic scale understanding of charge transfer in polyene, we have measured the conductance of a single polyene-based molecular chain via lifting it up with scanning tunneling microscopy tip. Different from semiconducting characters in pristine polyene (polyacetylene), high conductance and low decay constant are obtained, along with an electronic state around Fermi level and characteristic vibrational mode. These observed phenomena result from pinned molecular orbital owing to molecule-electrode coupling at the interface, and weakened bond length alternation due to electron-phonon coupling inside single molecular chain. Our findings emphasize the interfacial characteristics in molecular junctions and promising properties of polyene, with single molecular conductance as a vital tool for bringing insights into the design and construction of nanodevices.

Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-024-50915-8 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-50915-8

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-024-50915-8

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().