Erythrosin B encapsulated in a fluoropolymer matrix for dissolved oxygen optical sensing in aggressive aqueous environments

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

A robust thin film dissolved oxygen sensor was fabricated by trapping erythrosin Bin a flexible fluoropolymer matrix. Strong phosphorescence, which was partially quenched by dissolved oxygen, was observed when the sensor was immersed in water. Residual phosphorescence, which was not quenched by dissolved oxygen, was attributed to the presence of aggregated dye species. The sensor was optically transparent, resistant to contamination, with good mechanical properties. Fast response, coupled with good sensitivity and resistance to leaching, were also exhibited by this system. The Stern-Volmer (SV) plot exhibited marked downward turning at higher oxygen concentrations. A linear plot was obtained when the SV equation was modified to account for the varying sensitivity of dye molecules in the matrix to the quencher.
Original languageEnglish
Pages (from-to)531-535
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume162
Issue number2-3
Publication statusPublished - Mar 2004

Fingerprint

Dive into the research topics of 'Erythrosin B encapsulated in a fluoropolymer matrix for dissolved oxygen optical sensing in aggressive aqueous environments'. Together they form a unique fingerprint.

Cite this