Počet záznamů: 1
Self-Assembled Monolayers of Molecular Conductors with Terpyridine-Metal Redox Switching Elements: A Combined AFM, STM and Electrochemical Study
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SYSNO ASEP 0565260 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Self-Assembled Monolayers of Molecular Conductors with Terpyridine-Metal Redox Switching Elements: A Combined AFM, STM and Electrochemical Study Tvůrce(i) Kocábová, Jana (UFCH-W) RID
Vavrek, František (UFCH-W) ORCID, RID, SAI
Nováková Lachmanová, Štěpánka (UFCH-W) ORCID, RID
Šebera, Jakub (UFCH-W) ORCID, RID
Valášek, M. (DE)
Hromadová, Magdaléna (UFCH-W) RID, ORCID, SAIČíslo článku 8320 Zdroj.dok. Molecules. - : MDPI
Roč. 27, č. 23 (2022)Poč.str. 15 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova self-assembled monolayer ; redox switching ; electron transfer Vědní obor RIV CG - Elektrochemie Obor OECD Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis) Způsob publikování Open access Institucionální podpora UFCH-W - RVO:61388955 UT WOS 000896219000001 EID SCOPUS 85143586529 DOI 10.3390/molecules27238320 Anotace Self-assembled monolayers (SAMs) of terpyridine-based transition metal (ruthenium and osmium) complexes, anchored to gold substrate via tripodal anchoring groups, have been investigated as possible redox switching elements for molecular electronics. An electrochemical study was complemented by atomic force microscopy (AFM) and scanning tunneling microscopy (STM) methods. STM was used for determination of the SAM conductance values, and computation of the attenuation factor β from tunneling current–distance curves. We have shown that SAMs of Os-tripod molecules contain larger adlayer structures compared with SAMs of Ru-tripod molecules, which are characterized by a large number of almost evenly distributed small islands. Furthermore, upon cyclic voltammetric experimentation, Os-tripod films rearrange to form a smaller number of even larger islands, reminiscent of the Ostwald ripening process. Os-tripod SAMs displayed a higher surface concentration of molecules and lower conductance compared with Ru-tripod SAMs. The attenuation factor of Os-tripod films changed dramatically, upon electrochemical cycling, to a higher value. These observations are in accordance with previously reported electron transfer kinetics studies.
Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2023 Elektronická adresa https://hdl.handle.net/11104/0336829
Počet záznamů: 1