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Metal-enhanced fluorescence of OG-488 doped in Au@SiO2 core-shell nanoparticles
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
2013 (English)In: Materials letters (General ed.), ISSN 0167-577X, E-ISSN 1873-4979, Vol. 112, 169-172 p.Article in journal (Refereed) Published
Abstract [en]

Monodisperse Au-core silica-shell (Au@SiO2) nanoparticles demonstrated a great potential for the application of metal-enhanced fluorescence (MEF). The silica shell was doped with a novel fluorophore, Oregon Green 488-isothiocyanate (OG-488). The fluorescence of OG-488 was enhanced by Au nanoparticle core, while the silica shell was used to control the distance between OG-488 and Au surface to alleviate fluorescence quenching. The fluorescence enhancement by Au@SiO2 nanoparticles was investigated by varying SiO2 shell thickness (from 15 nm to 50 nm) and Au core diameter (40 nm, 60 nm and 80 nm). Compared with OG-488 doped silica spheres without Au core, the Au@SiO2 nanoparticles maximally gave 35-fold stronger fluorescence emission. 

Place, publisher, year, edition, pages
2013. Vol. 112, 169-172 p.
Keyword [en]
Au@SiO2, OG-488, Core-shell nanoparticles, Metal-enhanced fluorescence, Luminescence, Optical materials and properties
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-212306DOI: 10.1016/j.matlet.2013.09.021ISI: 000326667300048OAI: oai:DiVA.org:uu-212306DiVA: diva2:677732
Available from: 2013-12-10 Created: 2013-12-09 Last updated: 2017-12-06Bibliographically approved

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Zhu, Jiefang

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