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dc.contributor.authorOzel, T.en_US
dc.contributor.authorHernandez-Martinez P.L.en_US
dc.contributor.authorMutlugun, E.en_US
dc.contributor.authorAkin O.en_US
dc.contributor.authorNizamoglu, S.en_US
dc.contributor.authorOzel I.O.en_US
dc.contributor.authorZhang Q.en_US
dc.contributor.authorXiong Q.en_US
dc.contributor.authorDemir, H. V.en_US
dc.date.accessioned2016-02-08T09:37:37Z
dc.date.available2016-02-08T09:37:37Z
dc.date.issued2013en_US
dc.identifier.issn15306984en_US
dc.identifier.urihttp://hdl.handle.net/11693/20897
dc.description.abstractWe report selectively plasmon-mediated nonradiative energy transfer between quantum dot (QD) emitters interacting with each other via Förster-type resonance energy transfer (FRET) under controlled plasmon coupling either to only the donor QDs (i.e., donor-selective) or to only the acceptor QDs (i.e., acceptor-selective). Using layer-by-layer assembled colloidal QD nanocrystal solids with metal nanoparticles integrated at carefully designed spacing, we demonstrate the ability to enable/disable the coupled plasmon-exciton (plexciton) formation distinctly at the donor (exciton departing) site or at the acceptor (exciton feeding) site of our choice, while not hindering the donor exciton-acceptor exciton interaction but refraining from simultaneous coupling to both sites of the donor and the acceptor in the FRET process. In the case of donor-selective plexciton, we observed a substantial shortening in the donor QD lifetime from 1.33 to 0.29 ns as a result of plasmon-coupling to the donors and the FRET-assisted exciton transfer from the donors to the acceptors, both of which shorten the donor lifetime. This consequently enhanced the acceptor emission by a factor of 1.93. On the other hand, in the complementary case of acceptor-selective plexciton we observed a 2.70-fold emission enhancement in the acceptor QDs, larger than the acceptor emission enhancement of the donor-selective plexciton, as a result of the combined effects of the acceptor plasmon coupling and the FRET-assisted exciton feeding. Here we present the comparative results of theoretical modeling of the donor- and acceptor-selective plexcitons of nonradiative energy transfer developed here for the first time, which are in excellent agreement with the systematic experimental characterization. Such an ability to modify and control energy transfer through mastering plexcitons is of fundamental importance, opening up new applications for quantum dot embedded plexciton devices along with the development of new techniques in FRET-based fluorescence microscopy. © 2013 American Chemical Society.en_US
dc.language.isoEnglishen_US
dc.source.titleNano Lettersen_US
dc.relation.isversionofhttp://dx.doi.org/10.1021/nl4009106en_US
dc.subjectexcitonsen_US
dc.subjectlayer-by-layer assemblyen_US
dc.subjectLocalized plasmonsen_US
dc.subjectmetal nanoparticlesen_US
dc.subjectnonradiative energy transferen_US
dc.subjectplexcitonsen_US
dc.subjectsemiconductor quantum dotsen_US
dc.subjectEmission enhancementen_US
dc.subjectExciton interactionsen_US
dc.subjectExperimental characterizationen_US
dc.subjectLayer-by-layer assembliesen_US
dc.subjectLocalized plasmonsen_US
dc.subjectNonradiative energy transferen_US
dc.subjectplexcitonsen_US
dc.subjectResonance energy transferen_US
dc.subjectEnergy transferen_US
dc.subjectFluorescence microscopyen_US
dc.subjectMetal nanoparticlesen_US
dc.subjectPlasmonsen_US
dc.subjectSemiconductor quantum dotsen_US
dc.subjectExcitonsen_US
dc.subjectfluorescent dyeen_US
dc.subjectnanoparticleen_US
dc.subjectchemistryen_US
dc.subjectelectron transporten_US
dc.subjectenergy transferen_US
dc.subjectfluorescence microscopyen_US
dc.subjectfluorescence resonance energy transferen_US
dc.subjectmaterials testingen_US
dc.subjectproceduresen_US
dc.subjectsurface plasmon resonanceen_US
dc.subjectElectron Transporten_US
dc.subjectEnergy Transferen_US
dc.subjectFluorescence Resonance Energy Transferen_US
dc.subjectFluorescent Dyesen_US
dc.subjectMaterials Testingen_US
dc.subjectMicroscopy, Fluorescenceen_US
dc.subjectNanoparticlesen_US
dc.subjectSurface Plasmon Resonanceen_US
dc.titleObservation of selective plasmon-exciton coupling in nonradiative energy transfer: Donor-selective versus acceptor-selective plexcitonsen_US
dc.typeArticleen_US
dc.departmentCenter of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singaporeen_US
dc.departmentDivision of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singaporeen_US
dc.departmentDepartment of Physics, UNAM - Institute of Materials Science and Nanotechnology, Bilkent University, TR-06800, Ankara, Turkeyen_US
dc.citation.spage3065en_US
dc.citation.epage3072en_US
dc.citation.volumeNumber13en_US
dc.citation.issueNumber7en_US
dc.identifier.doi10.1021/nl4009106en_US


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