Verification and Temperature-Dependent Rectification by HBQ, the Smallest Unimolecular Donor-Acceptor Rectifier

Yingmei Han; Li Jiang; Joseph E. Meany; Yulong Wang; Stephen A. Woski; Marcus S. Johnson; Christian A. Nijhuis; Robert M. Metzger

doi:10.1021/acsomega.2c01182

Verification and Temperature-Dependent Rectification by HBQ, the Smallest Unimolecular Donor-Acceptor Rectifier

Yingmei Han
, Li Jiang
, Joseph E. Meany
, Yulong Wang
, Stephen A. Woski
, Marcus S. Johnson
, Christian A. Nijhuis
, Robert M. Metzger^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

3 Citations (Scopus)

136 Downloads (Pure)

Abstract

Five years ago, rectification of electrical current was found in 4′-bromo-3,4-dicyano-2′,5′-dimethoxy-[1,1′-biphenyl]-2,5-dione (1), a hemibiquinone (which we will call either 1 or HBQ) that has a very small working length (1.1 nm). Monolayers of HBQ on AuTS were detected by "nanodozing"atomic force microscopy (AFM) and were contacted with two types of top electrodes: either cold Au or eutectic Ga-In. Here, we describe cyclic voltammetry of a self-assembled monolayer (SAM) of HBQ and its orientation on a gold substrate with angle-resolved X-ray photoelectron spectroscopy. New measurements of its rectification as a monolayer as a function of bias range and temperature confirm and prove that HBQ is truly the smallest donor-acceptor rectifier and provide some insight into the mechanism of rectification.

Original language	English
Pages (from-to)	28790-28796
Number of pages	7
Journal	ACS Omega
Volume	7
Issue number	33
DOIs	https://doi.org/10.1021/acsomega.2c01182
Publication status	Published - 23 Aug 2022

Access to Document

10.1021/acsomega.2c01182Licence: CC BY

Han-2022-Verification-and-temperature-dependFinal published version, 2.66 MBLicence: CC BY

Cite this

@article{cbc0e0ff76414b8bbf358f4275084211,

title = "Verification and Temperature-Dependent Rectification by HBQ, the Smallest Unimolecular Donor-Acceptor Rectifier",

abstract = "Five years ago, rectification of electrical current was found in 4′-bromo-3,4-dicyano-2′,5′-dimethoxy-[1,1′-biphenyl]-2,5-dione (1), a hemibiquinone (which we will call either 1 or HBQ) that has a very small working length (1.1 nm). Monolayers of HBQ on AuTS were detected by {"}nanodozing{"}atomic force microscopy (AFM) and were contacted with two types of top electrodes: either cold Au or eutectic Ga-In. Here, we describe cyclic voltammetry of a self-assembled monolayer (SAM) of HBQ and its orientation on a gold substrate with angle-resolved X-ray photoelectron spectroscopy. New measurements of its rectification as a monolayer as a function of bias range and temperature confirm and prove that HBQ is truly the smallest donor-acceptor rectifier and provide some insight into the mechanism of rectification.",

author = "Yingmei Han and Li Jiang and Meany, \{Joseph E.\} and Yulong Wang and Woski, \{Stephen A.\} and Johnson, \{Marcus S.\} and Nijhuis, \{Christian A.\} and Metzger, \{Robert M.\}",

note = "Funding Information: The authors acknowledge the National Research Program (award NRF-CRP 8-2011-07) of the Research Foundation of Singapore for supporting this research under the Competitive Research Program. This research was also supported by the NRF, the Prime Minister{\textquoteright}s Office, Singapore, under its medium-sized Centre Program. Publisher Copyright: {\textcopyright} 2022 The Authors. Published by American Chemical Society. Financial transaction number: 2500017085 ",

year = "2022",

month = aug,

day = "23",

doi = "10.1021/acsomega.2c01182",

language = "English",

volume = "7",

pages = "28790--28796",

journal = "ACS Omega",

issn = "2470-1343",

publisher = "American Chemical Society",

number = "33",

}

TY - JOUR

T1 - Verification and Temperature-Dependent Rectification by HBQ, the Smallest Unimolecular Donor-Acceptor Rectifier

AU - Han, Yingmei

AU - Jiang, Li

AU - Meany, Joseph E.

AU - Wang, Yulong

AU - Woski, Stephen A.

AU - Johnson, Marcus S.

AU - Nijhuis, Christian A.

AU - Metzger, Robert M.

N1 - Funding Information: The authors acknowledge the National Research Program (award NRF-CRP 8-2011-07) of the Research Foundation of Singapore for supporting this research under the Competitive Research Program. This research was also supported by the NRF, the Prime Minister’s Office, Singapore, under its medium-sized Centre Program. Publisher Copyright: © 2022 The Authors. Published by American Chemical Society. Financial transaction number: 2500017085

PY - 2022/8/23

Y1 - 2022/8/23

N2 - Five years ago, rectification of electrical current was found in 4′-bromo-3,4-dicyano-2′,5′-dimethoxy-[1,1′-biphenyl]-2,5-dione (1), a hemibiquinone (which we will call either 1 or HBQ) that has a very small working length (1.1 nm). Monolayers of HBQ on AuTS were detected by "nanodozing"atomic force microscopy (AFM) and were contacted with two types of top electrodes: either cold Au or eutectic Ga-In. Here, we describe cyclic voltammetry of a self-assembled monolayer (SAM) of HBQ and its orientation on a gold substrate with angle-resolved X-ray photoelectron spectroscopy. New measurements of its rectification as a monolayer as a function of bias range and temperature confirm and prove that HBQ is truly the smallest donor-acceptor rectifier and provide some insight into the mechanism of rectification.

AB - Five years ago, rectification of electrical current was found in 4′-bromo-3,4-dicyano-2′,5′-dimethoxy-[1,1′-biphenyl]-2,5-dione (1), a hemibiquinone (which we will call either 1 or HBQ) that has a very small working length (1.1 nm). Monolayers of HBQ on AuTS were detected by "nanodozing"atomic force microscopy (AFM) and were contacted with two types of top electrodes: either cold Au or eutectic Ga-In. Here, we describe cyclic voltammetry of a self-assembled monolayer (SAM) of HBQ and its orientation on a gold substrate with angle-resolved X-ray photoelectron spectroscopy. New measurements of its rectification as a monolayer as a function of bias range and temperature confirm and prove that HBQ is truly the smallest donor-acceptor rectifier and provide some insight into the mechanism of rectification.

UR - https://www.scopus.com/pages/publications/85136264999

U2 - 10.1021/acsomega.2c01182

DO - 10.1021/acsomega.2c01182

M3 - Article

AN - SCOPUS:85136264999

SN - 2470-1343

VL - 7

SP - 28790

EP - 28796

JO - ACS Omega

JF - ACS Omega

IS - 33

ER -

Verification and Temperature-Dependent Rectification by HBQ, the Smallest Unimolecular Donor-Acceptor Rectifier

Abstract

Access to Document

Other files and links

Fingerprint

Cite this