Lifetime-Based Sensing: Influence of the Microenvironment
- 1 March 1996
- journal article
- research article
- Published by American Chemical Society (ACS) in Analytical Chemistry
- Vol. 68 (5) , 753-757
- https://doi.org/10.1021/ac9507092
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 pyrene compound in a hydrogel and a ruthenium complex for oxygen sensing embedded in a polystyrene membrane.Keywords
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