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dc.contributor.authorLahtinen, Tanja
dc.contributor.authorHulkko, Eero
dc.contributor.authorSokołowska, Karolina
dc.contributor.authorTero, Tiia-Riikka
dc.contributor.authorSaarnio, Ville
dc.contributor.authorLindgren, Johan
dc.contributor.authorPettersson, Mika
dc.contributor.authorHäkkinen, Hannu
dc.contributor.authorLehtovaara, Lauri
dc.date.accessioned2016-11-21T11:34:30Z
dc.date.available2017-09-21T21:45:07Z
dc.date.issued2016
dc.identifier.citationLahtinen, T., Hulkko, E., Sokołowska, K., Tero, T.-R., Saarnio, V., Lindgren, J., Pettersson, M., Häkkinen, H., & Lehtovaara, L. (2016). Covalently linked multimers of gold nanoclusters Au102(p-MBA)44 and Au∼250(p-MBA)n. <i>Nanoscale</i>, <i>8</i>(44), 18665-18674. <a href="https://doi.org/10.1039/C6NR05267C" target="_blank">https://doi.org/10.1039/C6NR05267C</a>
dc.identifier.otherCONVID_26234215
dc.identifier.otherTUTKAID_71282
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/51936
dc.description.abstractWe present the synthesis, separation, and characterization of covalently-bound multimers of para-mercaptobenzoic acid (p-MBA) protected gold nanoclusters. The multimers were synthesized by performing a ligand-exchange reaction of a pre-characterized Au102(p-MBA)44 nanocluster with biphenyl-4,4′-dithiol (BPDT). The reaction products were separated using gel electrophoresis yielding several distinct bands. The bands were analyzed by transmission electron microscopy (TEM) revealing monomer, dimer, and trimer fractions of the nanocluster. TEM analysis of dimers in combination with molecular dynamics simulations suggest that the nanoclusters are covalently bound via a disulfide bridge between BPDT molecules. The linking chemistry is not specific to Au102(p-MBA)44. The same approach yields multimers also for a larger monodisperse p-MBA-protected cluster of approximately 250 gold atoms, Au∼250(p-MBA)n. While the Au102(p-MBA)44 is not plasmonic, the Au∼250(p-MBA)n nanocluster supports localized surface plasmon resonance (LSPR) at 530 nm. Multimers of the Au∼250(p-MBA)n exhibit additional transitions in their UV-vis spectrum at 630 nm and 810 nm, indicating the presence of hybridized LSPR modes. Well-defined structures and relatively small sizes make these systems excellent candidates for connecting ab initio theoretical studies and experimental quantum plasmonics. Moreover, our work opens new possibilities in the controlled synthesis of advanced monodisperse nanocluster superstructures.en
dc.language.isoeng
dc.publisherRoyal Society of Chemistry Publishing; National Center for Nanoscience and Technology
dc.relation.ispartofseriesNanoscale
dc.subject.othermultimers
dc.subject.othergold nanoclusters
dc.titleCovalently linked multimers of gold nanoclusters Au102(p-MBA)44 and Au∼250(p-MBA)n
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201611184668
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosKemian laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.contributor.laitosDepartment of Chemistryen
dc.contributor.oppiaineFysikaalinen kemiafi
dc.contributor.oppiaineOrgaaninen kemiafi
dc.contributor.oppiaineNanoscience Centerfi
dc.contributor.oppiainePhysical Chemistryen
dc.contributor.oppiaineOrganic Chemistryen
dc.contributor.oppiaineNanoscience Centeren
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2016-11-18T13:15:09Z
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.format.pagerange18665-18674
dc.relation.issn2040-3364
dc.relation.numberinseries44
dc.relation.volume8
dc.type.versionacceptedVersion
dc.rights.copyright© The Royal Society of Chemistry 2016. This is a final draft version of an article whose final and definitive form has been published by RSC. Published in this repository with the kind permission of the publisher.
dc.rights.accesslevelopenAccessfi
dc.relation.grantnumber266492
dc.relation.grantnumber269402
dc.relation.doi10.1039/C6NR05267C
dc.relation.funderSuomen Akatemiafi
dc.relation.funderSuomen Akatemiafi
dc.relation.funderResearch Council of Finlanden
dc.relation.funderResearch Council of Finlanden
jyx.fundingprogramAkatemiahanke, SAfi
jyx.fundingprogramAkatemiatutkija, SAfi
jyx.fundingprogramAcademy Project, AoFen
jyx.fundingprogramAcademy Research Fellow, AoFen
jyx.fundinginformationThis work was financially supported by the Academy of Finland via projects 269402 and 273499 (L. L.), 265502 (E. H.), and 266492 (H. H.), the computations were made at the NSC and at CSC – the Finnish IT Center for Science in Espoo. We acknowledge Prof. T. Tsukuda, Assoc. Prof. K. Koyasu, an Mr K. Hirata for resources and support to measure the mass spectrum of Au102( p-MBA)44 in the University of Tokyo, during a visit (T.-R. T.) supported by the University of Jyväskylä. We acknowledge Drs A. Johansson, G. Groenhof, P. Papponen, and Ms E. Pohjolainen for technical help and Drs X. Chen, J. Koivisto, S. Malola, and K. Salorinne for fruitful discussions.
dc.type.okmA1


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