Please use this identifier to cite or link to this item: https://doi.org/10.1021/ja904824w
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dc.titleNitric oxide switches on the photoluminescence of molecularly engineered quantum dots
dc.contributor.authorWang, S.
dc.contributor.authorHan, M.-Y.
dc.contributor.authorHuang, D.
dc.date.accessioned2014-06-17T09:45:35Z
dc.date.available2014-06-17T09:45:35Z
dc.date.issued2009-08-26
dc.identifier.citationWang, S., Han, M.-Y., Huang, D. (2009-08-26). Nitric oxide switches on the photoluminescence of molecularly engineered quantum dots. Journal of the American Chemical Society 131 (33) : 11692-11694. ScholarBank@NUS Repository. https://doi.org/10.1021/ja904824w
dc.identifier.issn00027863
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/67194
dc.description.abstract(Figure Presented) The photoluminescence of nonfluorescent molecularly engineered quantum dots (QDs) with iron(III) dithiocarbamates was selectively switched on by nitric oxide. Such functional QDs consisted of CdSe-ZnS nanocrystals as fluorophores and surface bound tris(N-(dithiocarboxy) sarcosine)iron(III) as reactive centers for nitric oxide. The fluorescence of the QDs was quenched by energy transfer between the excited QD cores and the surface bound iron(III) dithiocarbamates due to their optical energy overlapping. Nitric oxide restored the fluorescence of the QDs through reduction of the surface bound iron(III) complexes to iron(I) -NO adducts and thus shutting down the energy transfer pathway. The fluorescence of the iron(III) complex engineered QDs was selectively and quantitatively restored by nitric oxide but not by other reactive oxygen species. Such a property of the functional QDs could be used for sensing nitric oxide based on the fluorescence "turn on" mechanism. © 2009 American Chemical Society.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1021/ja904824w
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentBIOENGINEERING
dc.contributor.departmentCHEMISTRY
dc.description.doi10.1021/ja904824w
dc.description.sourcetitleJournal of the American Chemical Society
dc.description.volume131
dc.description.issue33
dc.description.page11692-11694
dc.description.codenJACSA
dc.identifier.isiut000269379400026
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