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2019-12-02Zeitschriftenartikel DOI: 10.18452/20872
Gold‐ and Silver‐Coated Barium Titanate Nanocomposites as Probes for Two‐Photon Multimodal Microspectroscopy
dc.contributor.authorMadzharova, Fani
dc.contributor.authorNodar, Álvaro
dc.contributor.authorŽivanovic, Vesna
dc.contributor.authorHuang, Michael R. S.
dc.contributor.authorKoch, Christoph T.
dc.contributor.authorEsteban, Rubén
dc.contributor.authorAizpurua, Javier
dc.contributor.authorKneipp, Janina
dc.date.accessioned2019-12-03T11:45:41Z
dc.date.available2019-12-03T11:45:41Z
dc.date.issued2019-12-02none
dc.identifier.other10.1002/adfm.201904289
dc.identifier.urihttp://edoc.hu-berlin.de/18452/21601
dc.description.abstractImproved multiphoton‐excited imaging and microspectroscopy require nanoprobes that can give different nonlinear optical signals. Here, composite nanostructures with a barium titanate core and a plasmonic moiety at their surface are synthesized and characterized. It is found that the core provides a high second‐order nonlinear susceptibility for sensitive second harmonic generation (SHG) imaging in living cells. As a second function in the two‐photon regime, the plasmonic part yields high local fields for resonant and nonresonant surface enhanced hyper Raman scattering (SEHRS). SEHRS complements the one‐photon surface enhanced Raman scattering (SERS) spectra that are also enhanced by the plasmonic shells. Barium titanate silver core–shell (Ag@BaTiO3) composites are specifically suited for SEHRS and SHG excited at 1064 nm, while gold at barium titanate (Au@BaTiO3) nanoparticles can be useful in a combination of SHG and SERS at lower wavelengths, here at 785 nm and 850 nm. The theoretical models show that the optical properties of the BaTiO3 dielectric core depend on probing frequency, shape, size, and plasmonic properties of the surrounding gold nanoparticles so that they can be optimized for a particular type of experiment. These versatile, tunable probes give new opportunities for combined multiphoton probing of morphological structure and chemical properties of biosystems.eng
dc.language.isoengnone
dc.publisherHumboldt-Universität zu Berlin
dc.rights(CC BY-NC-ND 4.0) Attribution-NonCommercial-NoDerivatives 4.0 Internationalger
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectplasmonic‐barium titanate nanoprobeseng
dc.subjectsecond harmonic generationeng
dc.subjectsurface enhanced hyper Raman scatteringeng
dc.subjecttwo‐photon microspectroscopyeng
dc.subject.ddc620 Ingenieurwissenschaften und zugeordnete Tätigkeitennone
dc.subject.ddc540 Chemie und zugeordnete Wissenschaftennone
dc.subject.ddc530 Physiknone
dc.titleGold‐ and Silver‐Coated Barium Titanate Nanocomposites as Probes for Two‐Photon Multimodal Microspectroscopynone
dc.typearticle
dc.identifier.urnurn:nbn:de:kobv:11-110-18452/21601-5
dc.identifier.doihttp://dx.doi.org/10.18452/20872
dc.type.versionpublishedVersionnone
local.edoc.container-titleAdvanced functional materialsnone
local.edoc.pages13none
local.edoc.type-nameZeitschriftenartikel
local.edoc.institutionMathematisch-Naturwissenschaftliche Fakultätnone
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
local.edoc.container-publisher-nameWiley-VCHnone
local.edoc.container-publisher-placeWeinheimnone
dc.description.versionPeer Reviewednone
local.edoc.container-articlenumber1904289none
dc.identifier.eissn1616-3028

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