Abstract
The development of a glucose biosensor based on co-immobilisation of oxygen (O2) responsive luminophore and glucose oxidase (GOx) within nanoporous solgel-derived xerogels is described. The biosensor operates in the frequency domain and exploits the effect of glucose and O2 consumption by GOx on the luminophore excited-state lifetime (i.e. phase angle). The biosensor consists of a modulated light emitting diode as the excitation source and a silicon photodiode as the detector. This sensing methodology establishes the viability for low-cost and accurate biosensors that operate at a low modulation frequency (tens of kHz). The biosensor is stable, reproducible, and provides an analytically reliable response from 0.5 to 15mM glucose.
| Original language | English |
|---|---|
| Pages (from-to) | 202-204 |
| Number of pages | 3 |
| Journal | Electronics Letters |
| Volume | 43 |
| Issue number | 4 |
| DOIs | |
| State | Published - 2007 |
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