Počet záznamů: 1
SERS of Isotopically Labeled C-12/C-13 Graphene Bilayer-Gold Nanostructured Film Hybrids: Graphene Layer as Spacer and SERS Probe
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SYSNO ASEP 0482703 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název SERS of Isotopically Labeled C-12/C-13 Graphene Bilayer-Gold Nanostructured Film Hybrids: Graphene Layer as Spacer and SERS Probe Tvůrce(i) Ek Weis, Johan (UFCH-W) RID
da Costa, Sara (UFCH-W) RID
Frank, Otakar (UFCH-W) RID, ORCID
Fridrichová, Michaela (UFCH-W) RID, ORCID, SAI
Vlčková, B. (CZ)
Vejpravová, Jana (FZU-D) RID, ORCID
Kalbáč, Martin (UFCH-W) RID, ORCIDZdroj.dok. Journal of Physical Chemistry C. - : American Chemical Society - ISSN 1932-7447
Roč. 121, č. 21 (2017), s. 11680-11686Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova Enhanced Raman spectroscopy ; surface ; fluorination Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry Vědní obor RIV – spolupráce Fyzikální ústav - Fyzika pevných látek a magnetismus CEP GA15-01953S GA ČR - Grantová agentura ČR LL1301 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy LM2015073 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UFCH-W - RVO:61388955 ; FZU-D - RVO:68378271 UT WOS 000402775200075 EID SCOPUS 85020639147 DOI 10.1021/acs.jpcc.7b02585 Anotace Single layer graphene (SLG) is envisaged to improve significantly the substrates for surface-enhanced Raman scattering of planar aromatic molecules as it can ensure a more even enhancement at different places of the substrate. For this purpose, the role of SLG as a spacer in such SERS platforms has to be addressed. Here, we report preparation and Raman spectral probing of hybrid systems constituted by 13 C/ 12 C bilayer graphene covered by 15 nm thick nanostructured gold. Hybrids with both the 13 C over 12 C layers and in the flipped geometry, and with both the turbostratic and the A-B stacked order have been investigated, and qualitative as well as quantitative information about the enhancement experienced by phonons of the individual graphene layers by the electromagnetic mechanism (EM) of SERS were obtained. In hybrids system under study, the top layer of the isotopically labeled bilayer graphene represents the SLG spacer, while the bottom layer mimics a monolayer of target planar aromatic molecules. Importantly, both the calculation and the experiment based chiefly on comparison of the relative intensity ratio of the clearly distinguished 13 C layer and 12 C layer G mode bands jointly indicate that the enhancement of Raman scattering of the molecular monolayer on SLG spacer by the EM mechanism of SERS will be only 0.7 times lower than that of a monolayer located directly on the nanostructured Au surface. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2018
Počet záznamů: 1