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Manganese doped zinc sulfide quantum dots for detection of Escherichia coli
Asian Inst Technol, Ctr Excellence Nanotechnol, Thailand.ORCID iD: 0000-0002-0074-3504
2012 (English)In: Journal of Fluorescence, ISSN 1053-0509, E-ISSN 1573-4994, Vol. 22, no 1, 403-408 p.Article in journal (Refereed) Published
Abstract [en]

A novel biocompatible chitosan passivated manganese doped zinc sulfide (Mn doped ZnS) nanophosphor has been synthesized through a simple aqueous precipitation reaction. Upon excitation with ultraviolet light, the quantum dots (QDs) emit an orange luminescence peaking at 590 nm, which is visible to the naked eye. These chitosan coated Mn doped ZnS QDs can have potential applications in bio-labeling, particularly in fluorescence-based imaging. One of the envisioned applications of these QDs is in improving the conventional, organic dye-reliant Fluorescence in situ Hybridization (FISH) technique, a widely used method for microbial detection. Here we demonstrate that the chitosan-capped Mn doped ZnS QDs are suitable for this purpose.

Place, publisher, year, edition, pages
Springer Science+Business Media B.V., 2012. Vol. 22, no 1, 403-408 p.
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Nano Technology
URN: urn:nbn:se:kth:diva-175224DOI: 10.1007/s10895-011-0973-5ISI: 000302463100043ScopusID: 2-s2.0-84857590340OAI: diva2:914383

QC 20160401

Available from: 2016-03-23 Created: 2015-10-10 Last updated: 2016-04-01Bibliographically approved

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Dutta, Joydeep
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