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Introducing Functionality by Graphene Covalent Grafting
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SYSNO ASEP 0482802 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Introducing Functionality by Graphene Covalent Grafting Tvůrce(i) Kovaříček, Petr (UFCH-W) ORCID, RID
Kalbáč, Martin (UFCH-W) RID, ORCIDZdroj.dok. Nanocon 2017 : conference proceedings : 9th International Conference on Nanomaterials - Research & Application. - Ostrava : Tanger Ltd., 2018 - ISBN 9788087294819 Rozsah stran s. 33-39 Poč.str. 7 s. Forma vydání Nosič - C Akce NANOCON 2017. International Conference on Nanomaterials - Research & Application /9./ Datum konání 18.10.2017 - 20.10.2017 Místo konání Brno Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova graphene ; covalent functionalization ; PEDOT Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry CEP LL1301 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy LM2015073 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UFCH-W - RVO:61388955 UT WOS 000452823300004 Anotace Graphene is a material of great potential in a broad range of applications, for each of which specific tuning of the material’s properties is required. This can be achieved, for example, by covalent functionalization. We have exploited protocols for surface grafting by diazonium salts, by nucleophilic and electrophilic substitution to perform graphene covalent modification of graphene on substrates. The painstaking analysis problem of monolayered materials was addressed using Raman spectroscopy, SERS, SEIRA, MS, AFM, XPS and SEM/EDX. The covalent grafting was shown to tolerate the transfer process, thus allowing ex post transfer from copper to other substrates. Functional devices often require combination of several materials with specific functions, such as graphene-polymer hybrid heterostructures. We have used the developed methodology of chemical functionalization for preparation of PEDOT:Graphene bilayers by selective in situ polymerization of EDOT on covalently functionalized graphene. The polymerization proceeds exclusively on the grafted graphene, and patterned structures with high spatial resolution down to 3 μm could have been prepared. The composite exhibits enhanced efficiency of electrochemical doping compared to pristine graphene, unsymmetrical transport characteristic with very good hole-transporting properties and efficient electronic communication between the two materials. The covalent functionalization of graphene thus introduces advanced functionality to the material, broadening its scope of applications. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2019
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