Studies on chitosan stabilised ZnS:Mn2+ nanoparticles
2008 (English)In: Journal of Bionanoscience, ISSN 1557-7910, Vol. 2, no 1, 42-48 p.Article in journal (Refereed) Published
We report a unique synthesis of zinc sulphide nanoparticles doped with manganese using a biocompatible passivating agent 'chitosan,' that shows efficient luminescence peaking at 590 nm. This high luminescence efficiency of the synthesized nanoparticles makes them ideal for quantum dot based bio-labelling applications. The synthesis is carried out by precipitation reaction in aqueous media of zinc acetate and sodium sulphide where manganese acetate is added as the dopant. The obtained nanoparticles were around 4 to 6 nm in size and were found to be stable for months of shelf life. The photoluminescence intensity did not degrade even when the colloid was heated up to 65 °C for prolonged periods, while it reduced slightly at higher temperatures. The photoluminescence of the nanoparticles did not reduce appreciably even after long irradiation under UV light.
Place, publisher, year, edition, pages
2008. Vol. 2, no 1, 42-48 p.
IdentifiersURN: urn:nbn:se:kth:diva-175254DOI: 10.1166/jbns.2008.025ScopusID: 2-s2.0-56749159891OAI: oai:DiVA.org:kth-175254DiVA: diva2:918242
QC 201604132016-04-112015-10-102016-04-13Bibliographically approved