Please use this identifier to cite or link to this item: https://doi.org/10.1039/c0nr00458h
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dc.titleBiocompatible glutathione capped gold clusters as one- and two-photon excitation fluorescence contrast agents for live cells imaging
dc.contributor.authorPolavarapu, L.
dc.contributor.authorManna, M.
dc.contributor.authorXu, Q.-H.
dc.date.accessioned2014-06-23T05:33:08Z
dc.date.available2014-06-23T05:33:08Z
dc.date.issued2011-02
dc.identifier.citationPolavarapu, L., Manna, M., Xu, Q.-H. (2011-02). Biocompatible glutathione capped gold clusters as one- and two-photon excitation fluorescence contrast agents for live cells imaging. Nanoscale 3 (2) : 429-434. ScholarBank@NUS Repository. https://doi.org/10.1039/c0nr00458h
dc.identifier.issn20403364
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/75664
dc.description.abstractThe one- and two-photon excitation emission properties of water soluble glutathione monolayer protected gold clusters were investigated. Strong two-photon emission was observed from the gold clusters. The two-photon absorption cross section of these gold clusters in water was deduced from the z-scan measurement to be 189740 GM, which is much higher compared to organic fluorescent dyes and quantum dots. These gold clusters also showed high photo-stability. The MTT assay showed that these gold clusters have low toxicity even at high concentrations. We have successfully demonstrated their applications for both one and two-photon excitation live cell imaging. The exceptional properties of these gold clusters make them a promising alternative for one- and two-photon bio-imaging and other nonlinear optical applications. © 2011 The Royal Society of Chemistry.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1039/c0nr00458h
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentNUS NANOSCIENCE & NANOTECH INITIATIVE
dc.contributor.departmentCHEMISTRY
dc.description.doi10.1039/c0nr00458h
dc.description.sourcetitleNanoscale
dc.description.volume3
dc.description.issue2
dc.description.page429-434
dc.identifier.isiut000287363500010
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