Detection of ethylene gas by fluorescence turn-on of a conjugated polymer.

TitleDetection of ethylene gas by fluorescence turn-on of a conjugated polymer.
Publication TypeJournal Article
Year of Publication2010
AuthorsEsser, B, Swager, TM
JournalAngewandte Chemie, International Edition
Volume49
Pagination8872–5
Date Publishednov
ISSN1521-3773
Keywordscopper fluorinated trispyrazolylborate complex eth, ethylene gas sensor fluorescence phenylene butadiy
Abstract

The sensing scheme the authors have designed for the detection of ethylene is based on a fluorescence turn-on mechanism and mimics nature by using a copper(I) complex to bind to ethylene. The fluorescence of the conjugated polymer is partially quenched by the presence of copper(I) moieties that can coordinate to the polymer. Upon exposure to ethylene gas, the copper complexes bind to the ethylene mols. and no longer quench the polymer fluorescence. The advantage of this fluorescence turn-on over a turn-off mechanism is that it requires a specific binding event to the copper to create a new signal, whereas fluorescence quenching can occur in multiple ways. Furthermore, if a completely dark background (completely quenched) state can be achieved, even a weak turn-on signal can be readily measured and thereby can allow trace detection. [on SciFinder(R)]

URLhttp://www.ncbi.nlm.nih.gov/pubmed/20927791
DOI10.1002/anie.201003899