Sensing material for oxygen gas prepared by doping sol-gel film with tris (2,2-bipyridyl)dichlororuthenium complex

A ruthenium complex, tris (2,2-bipyridyl)dichlororuthenium (TBDR) has been entrapped inside sol-gel films for the purpose of O-2 sensing based on fluo rescence quenching. The properties of this sensing material including fluor escence spectral, repeatability, reproducibility and the response curve are described. Results obtained from this study show that TBDR immobilised in thin films prepared via the sol-gel process gives a reversible response tow ards O-2 gas and the sensing material is regenerable by using N-2 gas. (C) 2001 Elsevier Science B.V. All rights reserved.