title: Lifetime-based sensing:  influence of the microenvironment.
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.
authors: Institut Für Experimentalphysik, Karl-Franzens-Universität, A-8010 Graz, Austria.
authors: S
authors: S
authors: Draxler
authors: M E
authors: ME
authors: Lippitsch