A chemically soldered polyoxometalate single-molecule transistor

Wu, Chuanli, Qiao, Xiaohang ORCID: 0000-0001-7801-4603, Robertson, Craig M, Higgins, Simon J ORCID: 0000-0003-3518-9061, Cai, Chenxin, Nichols, Richard J ORCID: 0000-0002-1446-8275 and Vezzoli, Andrea ORCID: 0000-0002-8059-0113 (2020) A chemically soldered polyoxometalate single-molecule transistor Angewandte Chemie, 132 (29). pp. 12127-12132. ISSN 0044-8249, 1521-3757

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Abstract

Abstract Polyoxometalates have been proposed in the literature as nanoelectronic components, where they could offer key advantages with their structural versatility and rich electrochemistry. Apart from a few studies on their ensemble behaviour (as monolayers or thin films), this potential remains largely unexplored. We synthesised a pyridyl‐capped Anderson–Evans polyoxometalate and used it to fabricate single‐molecule junctions, using the organic termini to chemically “solder” a single cluster to two nanoelectrodes. Operating the device in an electrochemical environment allowed us to probe charge transport through different oxidation states of the polyoxometalate, and we report here an efficient three‐state transistor behaviour. Conductance data fits a quantum tunnelling mechanism with different charge‐transport probabilities through different charge states. Our results show the promise of polyoxometalates in nanoelectronics and give an insight on their single‐entity electrochemical behaviour.

Item Type:	Article
Uncontrolled Keywords:	51 Physical Sciences, 40 Engineering, 34 Chemical Sciences, 4018 Nanotechnology
Depositing User:	Symplectic Admin
Date Deposited:	01 May 2020 10:22
Last Modified:	22 Nov 2025 05:21
DOI:	10.1002/ange.202002174
Related Websites:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3084057
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