Quenching of Luminescent Ruthenium(II) Complexes by Water and Polymer-Based Relative Humidity Sensors
Abstract:Water quenching of luminescent [Ru(phen)2dppz]Cl2, [Ru(phen)2dppn]Cl2, and [Ru(4,7-Ph2phen)2 dppz]Cl2 (phen = 1,10-phenanthroline; 4,7-Ph2phen = 4; 4,7-diphenyl-1,10-phenanthroline; dppz = dipyrido[3,2-a:2′3′-c]phenazine; dppn = benzodipyrido(a:3,2-h:2′,3′-j)phenazine) complexes was studied in acetonitrile and in polymers. The polymers contained hydrophobic and hydrophilic components to control mechanical properties and were designed to absorb water with changing humidity and, thus, affect the emission intensity and lifetime. Quenching by water in mixed solvents and in polymers was shown to arise from a combination of diffusional and static ground-state associational quenching. The factors controlling polymer properties are discussed. The systems can be tailored to give a wide range of responses or function as a binary sensor at a fixed humidity level.
Document Type: Research Article
Publication date: November 1, 2007
More about this publication?
- The Society publishes the internationally recognized, peer reviewed journal, Applied Spectroscopy, which is available both in print and online. Subscriptions are included with membership or can be purchased by institutional or corporate organizations. Abstracts may be viewed free of charge. Previously published as Bulletin (Society for Applied Spectroscopy)
- Editorial Board
- Information for Authors
- Submit a Paper
- Subscribe to this Title
- Membership Information
- Request copyrighted SAS materials
- Spectroscopic Nomenclature
- Focal Point (Open Access)
- ingentaconnect is not responsible for the content or availability of external websites