Graphene as a Reversible and Spectrally Selective Fluorescence Quencher

dc.citation.epage7en_US
dc.citation.spage1en_US
dc.citation.volumeNumber6en_US
dc.contributor.authorSalihoglu, O.en_US
dc.contributor.authorKakenov, N.en_US
dc.contributor.authorBalci, O.en_US
dc.contributor.authorBalci, S.en_US
dc.contributor.authorKocabas, C.en_US
dc.date.accessioned2018-04-12T10:49:10Z
dc.date.available2018-04-12T10:49:10Z
dc.date.issued2016en_US
dc.departmentDepartment of Physicsen_US
dc.description.abstractWe report reversible and spectrally selective fluorescence quenching of quantum dots (QDs) placed in close proximity to graphene. Controlling interband electronic transitions of graphene via electrostatic gating greatly modifies the fluorescence lifetime and intensity of nearby QDs via blocking of the nonradiative energy transfer between QDs and graphene. Using ionic liquid (IL) based electrolyte gating, we are able to control Fermi energy of graphene in the order of 1 eV, which yields electrically controllable fluorescence quenching of QDs in the visible spectrum. Indeed, our technique enables us to perform voltage controllable spectral selectivity among quantum dots at different emission wavelengths. We anticipate that our technique will provide tunable light-matter interaction and energy transfer that could yield hybrid QDs-graphene based optoelectronic devices with novel functionalities, and additionally, may be useful as a spectroscopic ruler, for example, in bioimaging and biomolecular sensing. We propose that graphene can be used as an electrically tunable and wavelength selective fluorescence quencher. � 2016 The Author(s).en_US
dc.identifier.doi10.1038/srep33911en_US
dc.identifier.issn2045-2322
dc.identifier.urihttp://hdl.handle.net/11693/36699
dc.language.isoEnglishen_US
dc.publisherNature Publishing Groupen_US
dc.relation.isversionofhttp://dx.doi.org/10.1038/srep33911en_US
dc.source.titleScientific Reportsen_US
dc.titleGraphene as a Reversible and Spectrally Selective Fluorescence Quencheren_US
dc.typeArticleen_US
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