P1.1.8 Quantum dot electrode for lightcontrolled biosensors
- Event
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany - Chapter
- P1.1 Biosensors
- Author(s)
- J. Tanne, D. Schaefer, F. Lisdat - Biosystems Technology, University of Applied Sciences Wildau, W. Parak - Biophotonic, Philipps Universität Marburg
- Pages
- 837 - 838
- DOI
- 10.5162/IMCS2012/P1.1.8
- ISBN
- 978-3-9813484-2-2
- Price
- free
Abstract
This study examines the oxygen dependency of the photocurrent of gold electrodes, which are modified with quantum dots (CdSe/ZnS nanoparticles). The oxygen dependent photocurrent is affected by the polarization of the electrode and the pH-value. In addition it is shown that an electrode modified with quantum dots also allows the detection of an enzyme reaction in solution. Based on this a photo-bio-electrochemical sensor for glucose detection is developed. The sensor can be read out by illumination the responding element area and photocurrent detection.