Home > Research > Publications & Outputs > Quasi-Free Electron States Responsible for Sing...

Research

Electronic data

  • Manuscript

    Accepted author manuscript, 1.56 MB, PDF document

    Available under license: CC BY: Creative Commons Attribution 4.0 International License

Links

Text available via DOI:

Keywords

View graph of relations

Quasi-Free Electron States Responsible for Single-Molecule Conductance Enhancement in Stable Radical

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Published

Standard

Quasi-Free Electron States Responsible for Single-Molecule Conductance Enhancement in Stable Radical. / Yang, Xingzhou; Hou, Songjun; Su, Meiling et al.
In: The Journal of Physical Chemistry Letters, Vol. 14, No. 17, 04.05.2023, p. 4004-4010.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Yang, X, Hou, S, Su, M, Zhan, Q, Zhang, H, Quintero, SM, Liu, X, Liu, J, Hong, W, Casado, J, Wu, Q, Lambert, CJ & Zheng, Y 2023, 'Quasi-Free Electron States Responsible for Single-Molecule Conductance Enhancement in Stable Radical', The Journal of Physical Chemistry Letters, vol. 14, no. 17, pp. 4004-4010. https://doi.org/10.1021/acs.jpclett.3c00536

APA

Yang, X., Hou, S., Su, M., Zhan, Q., Zhang, H., Quintero, S. M., Liu, X., Liu, J., Hong, W., Casado, J., Wu, Q., Lambert, C. J., & Zheng, Y. (2023). Quasi-Free Electron States Responsible for Single-Molecule Conductance Enhancement in Stable Radical. The Journal of Physical Chemistry Letters, 14(17), 4004-4010. https://doi.org/10.1021/acs.jpclett.3c00536

Vancouver

Yang X, Hou S, Su M, Zhan Q, Zhang H, Quintero SM et al. Quasi-Free Electron States Responsible for Single-Molecule Conductance Enhancement in Stable Radical. The Journal of Physical Chemistry Letters. 2023 May 4;14(17):4004-4010. Epub 2023 Apr 21. doi: 10.1021/acs.jpclett.3c00536

Author

Yang, Xingzhou ; Hou, Songjun ; Su, Meiling et al. / Quasi-Free Electron States Responsible for Single-Molecule Conductance Enhancement in Stable Radical. In: The Journal of Physical Chemistry Letters. 2023 ; Vol. 14, No. 17. pp. 4004-4010.

Bibtex

@article{b76e98895e9a49588adb92547aadeec6,
title = "Quasi-Free Electron States Responsible for Single-Molecule Conductance Enhancement in Stable Radical",
abstract = "Stable organic radicals, which possess half-filled orbitals in the vicinity of the Fermi energy, are promising candidates for electronic devices. In this Letter, using a combination of scanning-tunneling-microscopy-based break junction (STM-BJ) experiments and quantum transport theory, a stable fluorene-based radical is investigated. We demonstrate that the transport properties of a series of fluorene derivatives can be tuned by controlling the degree of localization of certain orbitals. More specifically, radical has a delocalized half-filled orbital resulting in Breit-Wigner resonances, leading to an unprecedented conductance enhancement of 2 orders of magnitude larger than the neutral nonradical counterpart ( ). In other words, conversion from a closed-shell fluorene derivative to the free radical in opens an electron transport path which massively enhances the conductance. This new understanding of the role of radicals in single-molecule junctions opens up a novel design strategy for single-molecule-based spintronic devices.",
keywords = "General Materials Science, Physical and Theoretical Chemistry",
author = "Xingzhou Yang and Songjun Hou and Meiling Su and Qian Zhan and Hanjun Zhang and Quintero, {Sergio M.} and Xiaodong Liu and Junyang Liu and Wenjing Hong and Juan Casado and Qingqing Wu and Lambert, {Colin J.} and Yonghao Zheng",
year = "2023",
month = may,
day = "4",
doi = "10.1021/acs.jpclett.3c00536",
language = "English",
volume = "14",
pages = "4004--4010",
journal = "The Journal of Physical Chemistry Letters",
issn = "1948-7185",
publisher = "American Chemical Society",
number = "17",

}

RIS

TY - JOUR

T1 - Quasi-Free Electron States Responsible for Single-Molecule Conductance Enhancement in Stable Radical

AU - Yang, Xingzhou

AU - Hou, Songjun

AU - Su, Meiling

AU - Zhan, Qian

AU - Zhang, Hanjun

AU - Quintero, Sergio M.

AU - Liu, Xiaodong

AU - Liu, Junyang

AU - Hong, Wenjing

AU - Casado, Juan

AU - Wu, Qingqing

AU - Lambert, Colin J.

AU - Zheng, Yonghao

PY - 2023/5/4

Y1 - 2023/5/4

N2 - Stable organic radicals, which possess half-filled orbitals in the vicinity of the Fermi energy, are promising candidates for electronic devices. In this Letter, using a combination of scanning-tunneling-microscopy-based break junction (STM-BJ) experiments and quantum transport theory, a stable fluorene-based radical is investigated. We demonstrate that the transport properties of a series of fluorene derivatives can be tuned by controlling the degree of localization of certain orbitals. More specifically, radical has a delocalized half-filled orbital resulting in Breit-Wigner resonances, leading to an unprecedented conductance enhancement of 2 orders of magnitude larger than the neutral nonradical counterpart ( ). In other words, conversion from a closed-shell fluorene derivative to the free radical in opens an electron transport path which massively enhances the conductance. This new understanding of the role of radicals in single-molecule junctions opens up a novel design strategy for single-molecule-based spintronic devices.

AB - Stable organic radicals, which possess half-filled orbitals in the vicinity of the Fermi energy, are promising candidates for electronic devices. In this Letter, using a combination of scanning-tunneling-microscopy-based break junction (STM-BJ) experiments and quantum transport theory, a stable fluorene-based radical is investigated. We demonstrate that the transport properties of a series of fluorene derivatives can be tuned by controlling the degree of localization of certain orbitals. More specifically, radical has a delocalized half-filled orbital resulting in Breit-Wigner resonances, leading to an unprecedented conductance enhancement of 2 orders of magnitude larger than the neutral nonradical counterpart ( ). In other words, conversion from a closed-shell fluorene derivative to the free radical in opens an electron transport path which massively enhances the conductance. This new understanding of the role of radicals in single-molecule junctions opens up a novel design strategy for single-molecule-based spintronic devices.

KW - General Materials Science

KW - Physical and Theoretical Chemistry

U2 - 10.1021/acs.jpclett.3c00536

DO - 10.1021/acs.jpclett.3c00536

M3 - Journal article

VL - 14

SP - 4004

EP - 4010

JO - The Journal of Physical Chemistry Letters

JF - The Journal of Physical Chemistry Letters

SN - 1948-7185

IS - 17

ER -