Double core-shell semiconducting molecular-chain halogen- bridged metal complexes with ohmic contact heterojunctions

Double core-shell semiconducting molecular-chain halogen- bridged metal complexes with ohmic contact heterojunctions | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Double core-shell semiconducting molecular-chain halogen- bridged metal complexes with ohmic contact heterojunctions Masanori Wakizaka, Keisuke Ishiguro, Takefumi Yoshida, Hiroaki Iguchi, and 3 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4156618/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract The fabrication of heterostructures from low-dimensional materials is very challenging, particularly the creation of low-dimensional heterojunctions that can be characterized at an atomic resolution. In a previous work, a heterostructure made from halogen-bridged metal complexes (MX-Chains), [Ni(chxn)2Br]Br2 (chxn = 1 R ,2 R -diaminocyclohexane) and [Pd(chxn)2Br]Br2, has been synthesized and the nature of the one-dimensional (1D) heterojunction at an atomic resolution was revealed. In the work reported here we have successfully fabricated double core-shell crystals (Ni–Pd–Ni) from these MX-Chains, using a stepwise electrochemical epitaxial method. Upon cleavage of the heterostructure along the van der Waals layers, a double heterojunction surface is observed. The MX- Chains are aligned in the heterostructure and exhibit anisotropic optical properties based on their 1D electronic systems, as measured using UV-vis-NIR polarized reflectance microscopy. Current– voltage curves at different temperatures are recorded using three probes attached to different areas of the heterostructure and reveal the presence of ohmic conduction through the double 1D heterojunctions. The ohmic contact between the two types of MX-Chains arise from the atomic-scale connection of the MX-Chains at the heterojunction. This work represents the first example of a molecule-based heterostructure that has electronic conductivity and demonstrates electrical conduction through a 1D heterojunction. Heterojunction Semiconductors Molecular-chains Electrical conductivity One- dimensional electronic system Full Text Additional Declarations The authors declare no competing interests. Supplementary Files Supportinginformation.pdf Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4156618","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":283145187,"identity":"aaca4893-98bd-4700-8759-84e3cb6f4d5c","order_by":0,"name":"Masanori 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Semiconductors, Molecular-chains, Electrical conductivity, One- dimensional electronic system","lastPublishedDoi":"10.21203/rs.3.rs-4156618/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4156618/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThe fabrication of heterostructures from low-dimensional materials is very challenging, particularly the creation of low-dimensional heterojunctions that can be characterized at an atomic resolution. In a previous work, a heterostructure made from halogen-bridged metal complexes (MX-Chains), [Ni(chxn)2Br]Br2 (chxn = 1\u003cem\u003eR\u003c/em\u003e,2\u003cem\u003eR\u003c/em\u003e-diaminocyclohexane) and [Pd(chxn)2Br]Br2, has been synthesized and the nature of the one-dimensional (1D) heterojunction at an atomic resolution was revealed. In the work reported here we have successfully fabricated double core-shell crystals (Ni–Pd–Ni) from these MX-Chains, using a stepwise electrochemical epitaxial method. Upon cleavage of the heterostructure along the van der Waals layers, a double heterojunction surface is observed. The MX- Chains are aligned in the heterostructure and exhibit anisotropic optical properties based on their 1D electronic systems, as measured using UV-vis-NIR polarized reflectance microscopy. Current– voltage curves at different temperatures are recorded using three probes attached to different areas of the heterostructure and reveal the presence of ohmic conduction through the double 1D heterojunctions. The ohmic contact between the two types of MX-Chains arise from the atomic-scale connection of the MX-Chains at the heterojunction. 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