Interaction of gold nanoparticles with thermoresponsive microgels: influence of the cross-linker density on optical properties

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dc.contributor.authorGawlitza, Kornelia
dc.contributor.authorTurner, Sarah T.
dc.contributor.authorPolzer, Frank
dc.contributor.authorWellert, Stefan
dc.contributor.authorKarg, Matthias
dc.contributor.authorMulvaney, Paul
dc.contributor.authorKlitzing, Regine von
dc.date.accessioned2016-06-24T05:35:15Z
dc.date.available2016-06-24T05:35:15Z
dc.date.issued2013
dc.descriptionDieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.de
dc.descriptionThis publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.en
dc.description.abstractThe interaction of spherical gold nanoparticles (Au-NPs) with microgels composed of chemically cross-linked poly-(N-isopropylacrylamide) is reported. Simple mixing of the two components leads to adsorption of the gold particles onto the microgels. Different loading densities can be achieved by varying the ratio of gold particles to microgel particles. The adsorption of gold nanoparticles is analysed by TEM, UV-Vis absorption spectroscopy and SAXS. The influence of the microgel mesh size on the adsorption of gold nanoparticles is investigated by using microgels with three different cross-linker densities. The results suggest a strong relationship between the nanoparticle penetration depth and the cross-linker density. This, in turn, directly influences the optical properties of the colloids due to plasmon resonance coupling. In addition, information about the mesh size distribution of the microgels is obtained. For the first time the change in optical properties by varying cross-linker density and temperature is directly related to the formation of dimers of gold particles, proven by SAXS.en
dc.description.sponsorshipDFG, SFB 951, Hybrid Inorganic/Organic Systems (HIOS) for Opto-Electronicsen
dc.identifier.eissn1463-9076
dc.identifier.pmid23942792
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/5646
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-5266
dc.language.isoen
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.ddc540 Chemie und zugeordnete Wissenschaftende
dc.titleInteraction of gold nanoparticles with thermoresponsive microgels: influence of the cross-linker density on optical propertiesen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.doi10.1039/c3cp51578h
dcterms.bibliographicCitation.issue37
dcterms.bibliographicCitation.journaltitlePhysical chemistry, chemical physicsen
dcterms.bibliographicCitation.originalpublishernameRoyal Society of Chemistryde
dcterms.bibliographicCitation.originalpublisherplaceCambridgede
dcterms.bibliographicCitation.pageend15631
dcterms.bibliographicCitation.pagestart15623
dcterms.bibliographicCitation.volume15
tub.accessrights.dnbdomain
tub.affiliationFak. 2 Mathematik und Naturwissenschaften::Inst. Chemiede
tub.affiliation.facultyFak. 2 Mathematik und Naturwissenschaftende
tub.affiliation.instituteInst. Chemiede
tub.publisher.universityorinstitutionTechnische Universität Berlin

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