Sweet plasmonics: sucrose macrocrystals of metal nanoparticles

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buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage869en_US
dc.citation.issueNumber3en_US
dc.citation.spage860en_US
dc.citation.volumeNumber8en_US
dc.contributor.authorErdem, T.en_US
dc.contributor.authorSoran - Erdem, Z.en_US
dc.contributor.authorHernandez - Martinez, P. L.en_US
dc.contributor.authorSharma, V. K.en_US
dc.contributor.authorAkçalı, H.en_US
dc.contributor.authorAkçalı, I.en_US
dc.contributor.authorGaponik N.en_US
dc.contributor.authorEychmuller, A.en_US
dc.contributor.authorDemir, Hilmi Volkanen_US
dc.date.accessioned2015-07-28T12:02:33Z
dc.date.available2015-07-28T12:02:33Z
dc.date.issued2015-03en_US
dc.departmentDepartment of Physicsen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractThe realization of plasmonic structures generally necessitates expensive fabrication techniques, such as electron beam and focused ion beam lithography, allowing for the top-down fabrication of low-dimensional structures. Another approach to make plasmonic structures in a bottom-up fashion is colloidal synthesis, which is convenient for liquid-state applications or very thin solid films where aggregation problems are an important challenge. The architectures prepared using these methods are typically not robust enough for easy handling and convenient integration. Therefore, developing a new plasmonic robust platform having large-scale dimensions without adversely affecting the plasmonic features is in high demand. As a solution, here we present a new plasmonic composite structure consisting of gold nanoparticles (Au NPs) incorporated into sucrose macrocrystals on a large scale, while preserving the plasmonic nature of the Au NPs and providing robustness in handling at the same time. As a proof of concept demonstration, we present the fluorescence enhancement of green CdTe quantum dots (QDs) via plasmonic coupling with these Au NPs in the sucrose crystals. The obtained composite material exhibits centimeter scale dimensions and the resulting quantum efficiency (QE) is enhanced via the interplay between the Au NPs and CdTe QDs by 58% (from 24% to 38%). Moreover, a shortening in the photoluminescence lifetime from 11.0 to 7.40 ns, which corresponds to a field enhancement factor of 2.4, is observed upon the introduction of Au NPs into the QD incorporated macrocrystals. These results suggest that such "sweet" plasmonic crystals are promising for large-scale robust platforms to embed plasmonic nanoparticles.en_US
dc.identifier.doi10.1007/s12274-014-0568-yen_US
dc.identifier.issn1998-0124
dc.identifier.urihttp://hdl.handle.net/11693/12675
dc.language.isoEnglishen_US
dc.publisherTsinghua University Pressen_US
dc.relation.isversionofhttp://dx.doi.org/10.1007/s12274-014-0568-yen_US
dc.source.titleNano researchen_US
dc.subjectPlasmonicsen_US
dc.subjectMacrocrystalsen_US
dc.subjectMetal nanoparticlesen_US
dc.subjectMetal enhanced fluorescenceen_US
dc.subjectColloidal quantum dotsen_US
dc.titleSweet plasmonics: sucrose macrocrystals of metal nanoparticlesen_US
dc.typeArticleen_US

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