---
_id: '17872'
abstract:
- lang: eng
  text: Coherent tunneling electron transport through molecular wires has been theoretically
    established as a temperature-independent process. Although several experimental
    studies have shown counter examples, robust models to describe this temperature
    dependence have not been thoroughly developed. Here, we demonstrate that dynamic
    molecular structures lead to temperature-dependent conductance within coherent
    tunneling regime. Using a custom-built variable-temperature scanning tunneling
    microscopy break-junction instrument, we find that oligo[n]phenylenes exhibit
    clear temperature-dependent conductance. Our calculations reveal that thermally
    activated dihedral rotations allow these molecular wires to have a higher probability
    of being in a planar conformation. As the tunneling occurs primarily through π-orbitals,
    enhanced coplanarization substantially increases the time-averaged tunneling probability.
    These calculations are consistent with the observation that more rotational pivot
    points in longer molecular wires leads to larger temperature-dependence on conductance.
    These findings reveal that molecular conductance within coherent and off-resonant
    electron transport regimes can be controlled by manipulating dynamic molecular
    structure.
article_processing_charge: No
article_type: letter_note
author:
- first_name: Woojung
  full_name: Lee, Woojung
  last_name: Lee
- first_name: Shayan
  full_name: Louie, Shayan
  last_name: Louie
- first_name: Austin M.
  full_name: Evans, Austin M.
  last_name: Evans
- first_name: Nicholas M.
  full_name: Orchanian, Nicholas M.
  last_name: Orchanian
- first_name: Ilana B.
  full_name: Stone, Ilana B.
  last_name: Stone
- first_name: Boyuan
  full_name: Zhang, Boyuan
  last_name: Zhang
- first_name: Yujing
  full_name: Wei, Yujing
  last_name: Wei
- first_name: Xavier
  full_name: Roy, Xavier
  last_name: Roy
- first_name: Colin
  full_name: Nuckolls, Colin
  last_name: Nuckolls
- first_name: Latha
  full_name: Venkataraman, Latha
  id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
  last_name: Venkataraman
  orcid: 0000-0002-6957-6089
citation:
  ama: Lee W, Louie S, Evans AM, et al. Increased molecular conductance in Oligo[n]phenylene
    wires by thermally enhanced dihedral planarization. <i>Nano Letters</i>. 2022;22(12):4919-4924.
    doi:<a href="https://doi.org/10.1021/acs.nanolett.2c01549">10.1021/acs.nanolett.2c01549</a>
  apa: Lee, W., Louie, S., Evans, A. M., Orchanian, N. M., Stone, I. B., Zhang, B.,
    … Venkataraman, L. (2022). Increased molecular conductance in Oligo[n]phenylene
    wires by thermally enhanced dihedral planarization. <i>Nano Letters</i>. American
    Chemical Society. <a href="https://doi.org/10.1021/acs.nanolett.2c01549">https://doi.org/10.1021/acs.nanolett.2c01549</a>
  chicago: Lee, Woojung, Shayan Louie, Austin M. Evans, Nicholas M. Orchanian, Ilana
    B. Stone, Boyuan Zhang, Yujing Wei, Xavier Roy, Colin Nuckolls, and Latha Venkataraman.
    “Increased Molecular Conductance in Oligo[n]Phenylene Wires by Thermally Enhanced
    Dihedral Planarization.” <i>Nano Letters</i>. American Chemical Society, 2022.
    <a href="https://doi.org/10.1021/acs.nanolett.2c01549">https://doi.org/10.1021/acs.nanolett.2c01549</a>.
  ieee: W. Lee <i>et al.</i>, “Increased molecular conductance in Oligo[n]phenylene
    wires by thermally enhanced dihedral planarization,” <i>Nano Letters</i>, vol.
    22, no. 12. American Chemical Society, pp. 4919–4924, 2022.
  ista: Lee W, Louie S, Evans AM, Orchanian NM, Stone IB, Zhang B, Wei Y, Roy X, Nuckolls
    C, Venkataraman L. 2022. Increased molecular conductance in Oligo[n]phenylene
    wires by thermally enhanced dihedral planarization. Nano Letters. 22(12), 4919–4924.
  mla: Lee, Woojung, et al. “Increased Molecular Conductance in Oligo[n]Phenylene
    Wires by Thermally Enhanced Dihedral Planarization.” <i>Nano Letters</i>, vol.
    22, no. 12, American Chemical Society, 2022, pp. 4919–24, doi:<a href="https://doi.org/10.1021/acs.nanolett.2c01549">10.1021/acs.nanolett.2c01549</a>.
  short: W. Lee, S. Louie, A.M. Evans, N.M. Orchanian, I.B. Stone, B. Zhang, Y. Wei,
    X. Roy, C. Nuckolls, L. Venkataraman, Nano Letters 22 (2022) 4919–4924.
date_created: 2024-09-06T13:06:35Z
date_published: 2022-05-31T00:00:00Z
date_updated: 2024-12-10T09:40:39Z
day: '31'
doi: 10.1021/acs.nanolett.2c01549
extern: '1'
external_id:
  pmid:
  - '35640062'
fulldoi: https://doi.org/10.1021/acs.nanolett.2c01549
intvolume: '        22'
issue: '12'
language:
- iso: eng
month: '05'
oa_version: None
page: 4919-4924
pmid: 1
publication: Nano Letters
publication_identifier:
  eissn:
  - 1530-6992
  issn:
  - 1530-6984
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Increased molecular conductance in Oligo[n]phenylene wires by thermally enhanced
  dihedral planarization
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 22
year: '2022'
...