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Graphene and Flavin Mononucleotide Interaction in Aqueous Graphene Dispersions
RISE - Research Institutes of Sweden, Bioscience and Materials, Surface, Process and Formulation. Uppsala University, Sweden.
RISE - Research Institutes of Sweden, Bioscience and Materials, Surface, Process and Formulation.ORCID iD: 0000-0002-3186-6507
Uppsala University, Sweden.
RISE - Research Institutes of Sweden, Bioscience and Materials, Surface, Process and Formulation.ORCID iD: 0000-0001-8775-0602
2019 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 123, no 43, p. 26282-26288Article in journal (Refereed) Published
Abstract [en]

A fundamental understanding of the interaction between graphene and a stabilizer is needed for the development of stable aqueous graphene dispersions. Here, we studied the interaction of graphene with the FMN in water. The UV-vis absorption spectra revealed blue shifts of the FMN absorption bands II (374 nm) and I (445 nm) in the presence of graphene. Furthermore, Fourier transform IR anal. showed that the graphene also upshifted the FMN vibration modes C10a=N1 and C4a=N5, which correspond to the FMN isoalloxazine binding sites N(1) and N(5), resp. In addition, thermogravimetric anal. showed that the thermal stability of graphene was enhanced by the adsorbed FMN, which supports the strong interaction. These results confirm that FMN adsorbs on the graphene surface in parallel conformation and hinders hydrogen bonding at the FMN isoalloxazine binding sites.

Place, publisher, year, edition, pages
American Chemical Society , 2019. Vol. 123, no 43, p. 26282-26288
Keywords [en]
flavin mononucleotide interaction graphene aqueous dispersion
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-40649DOI: 10.1021/acs.jpcc.9b06442OAI: oai:DiVA.org:ri-40649DiVA, id: diva2:1368879
Available from: 2019-11-08 Created: 2019-11-08 Last updated: 2019-11-08Bibliographically approved

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Sugunan, AbhilashAhniyaz, Anwar

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