Highly efficient potentiometric glucose biosensor based on functionalized InN quantum dots
2012 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 101, no 15, 153110- p.Article in journal (Refereed) Published
We present a fast, highly sensitive, and efficient potentiometric glucose biosensor based on functionalized InN quantum-dots (QDs). The InN QDs are grown by molecular beam epitaxy. The InN QDs are bio-chemically functionalized through physical adsorption of glucose oxidase (GOD). GOD enzyme-coated InN QDs based biosensor exhibits excellent linear glucose concentration dependent electrochemical response against an Ag/AgCl reference electrode over a wide logarithmic glucose concentration range (1 x 10(-5) M to 1 x 10(-2) M) with a high sensitivity of 80mV/decade. It exhibits a fast response time of less than 2 s with good stability and reusability and shows negligible response to common interferents such as ascorbic acid and uric acid. The fabricated biosensor has full potential to be an attractive candidate for blood sugar concentration detection in clinical diagnoses. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4758701]
Place, publisher, year, edition, pages
American Institute of Physics (AIP) , 2012. Vol. 101, no 15, 153110- p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-85857DOI: 10.1063/1.4758701ISI: 000310304900068OAI: oai:DiVA.org:liu-85857DiVA: diva2:573257
Funding Agencies|BBVA foundation||2012-11-302012-11-302014-01-15