Optical sensing of parts per million levels of water in organic solvents using redox-active osmium chromophore-based monolayers

Tarkeshwar Gupta, Milko van der Boom

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Optical sensing of parts per million (ppm)-levels of H2O (10-300 ppm) in an organic solvent with robust, osmium chromophore-based monolayers is demonstrated. The H2O-induced reduction of the covalently bound osmium(III) complex is fully reversible and can be readily monitored by UV/vis absorption spectroscopy. The thermally robust sensor can be reactivated chemically within 3 min.

Original languageEnglish
Pages (from-to)8400-8401
Number of pages2
JournalJournal of the American Chemical Society
Volume128
Issue number26
DOIs
Publication statusPublished - Jul 5 2006

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Osmium
Chromophores
Organic solvents
Oxidation-Reduction
Monolayers
Water
Ultraviolet spectroscopy
Absorption spectroscopy
Spectrum Analysis
Sensors

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

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abstract = "Optical sensing of parts per million (ppm)-levels of H2O (10-300 ppm) in an organic solvent with robust, osmium chromophore-based monolayers is demonstrated. The H2O-induced reduction of the covalently bound osmium(III) complex is fully reversible and can be readily monitored by UV/vis absorption spectroscopy. The thermally robust sensor can be reactivated chemically within 3 min.",
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