Silica coated quantum dots: a new tool for electrochemical and optical glucose detection

. The application of silica coated quantum dots (QDs@SiO 2 ) in glucose detection in combination with glucose oxidase is reported. The high specific surface area of such particles can be exploited to immobilise a greater amount of the enzyme on a modified electrode. In addition to this electrochemic...

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Bibliographic Details
Published in:Mikrochimica acta (1966) 2008-03, Vol.160 (3), p.375-383
Main Authors: Cavaliere-Jaricot, Sara, Darbandi, Masih, Kuçur, Erol, Nann, Thomas
Format: Article
Language:English
Subjects:
Analytical Chemistry
Characterization and Evaluation of Materials
Chemical Sciences
Chemistry
Chemistry and Materials Science
Material chemistry
Microengineering
Nanochemistry
Nanotechnology
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Summary:. The application of silica coated quantum dots (QDs@SiO 2 ) in glucose detection in combination with glucose oxidase is reported. The high specific surface area of such particles can be exploited to immobilise a greater amount of the enzyme on a modified electrode. In addition to this electrochemical method, we report here an indirect optical technique based on the photoluminescence quenching of QDs by hydrogen peroxide produced during glucose oxidation. The results obtained with these two different detection methodologies are compared.
ISSN:0026-3672
1436-5073
DOI:10.1007/s00604-007-0795-y