LIFETIME-BASED SENSING - INFLUENCE OF THE MICROENVIRONMENT

Authors
DRAXLER S LIPPITSCH ME
Citation
S. Draxler et Me. Lippitsch, LIFETIME-BASED SENSING - INFLUENCE OF THE MICROENVIRONMENT, Analytical chemistry, 68(5), 1996, pp. 753-757
Citations number
23
Categorie Soggetti
Chemistry Analytical
Journal title
Analytical chemistry → ACNP
ISSN journal
00032700
Volume
68
Issue
5
Year of publication
1996
Pages
753 - 757
Database
ISI
SICI code
0003-2700(1996)68:5<753:LS-IOT>2.0.ZU;2-X
Abstract
The influence of the microenvironment on the fluorescence behavior of indicator molecules is investigated. A model is developed to describe the fluorescence decay of indicator molecules in a nonuniform medium. Its consequences for fluorescence lifetime-based chemical sensors are discussed and verified in two examples, namely, a pH sensor using a py rene compound in a hydrogel and a ruthenium complex for oxygen sensing embedded in a polystyrene membrane.