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Proceedings Paper

Structurally integrated organic light-emitting device (OLED)-based multianalyte sensing through analyte-oxidase interactions
Author(s): Ruth Shinar; Chengliang Qian; Yuankun Cai; Zhaoqun Zhou; Bhaskar Choudhury; Joseph Shinar
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Paper Abstract

The development of a compact structurally integrated platform for detection of multianalytes that consume oxygen in the presence of specific oxidase enzymes is described. The detection is based on monitoring the photoluminescence (PL) intensity or lifetime of a sensing element based on the oxygen sensitive dye Pt octaethyl porphyrin (PtOEP). The excitation source for the PL is an array of individually addressable green OLED pixels. The analytes are gas- phase and dissolved oxygen, glucose, lactate, and alcohol. The sensing element for each analyte includes a layer of PtOEP-doped polystyrene, whose PL lifetime decreases with increasing O2 level, and a film or solution containing the oxidase enzyme specific to the analyte. Each sensing element is associated with two addressable ~2x2 mm2 OLED pixels. The operation and performance metrics of the sensor under various conditions are described and discussed.

Paper Details

Date Published: 12 November 2005
PDF: 9 pages
Proc. SPIE 6007, Smart Medical and Biomedical Sensor Technology III, 600710 (12 November 2005); doi: 10.1117/12.629699
Show Author Affiliations
Ruth Shinar, Iowa State Univ. (United States)
Chengliang Qian, Ames Lab.-USDOE and Iowa State Univ. (United States)
Yuankun Cai, Ames Lab.-USDOE and Iowa State Univ. (United States)
Zhaoqun Zhou, Ames Lab.-USDOE and Iowa State Univ. (United States)
Bhaskar Choudhury, Iowa State Univ. (United States)
Joseph Shinar, Iowa State Univ. (United States)


Published in SPIE Proceedings Vol. 6007:
Smart Medical and Biomedical Sensor Technology III
Brian M. Cullum; J. Chance Carter, Editor(s)

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