O₂-Responsive Chemical Sensors Based on Hybrid Xerogels that Contain Fluorinated Precursors

Authors: Bukowski, Rachel M.¹; Davenport, Michael D.²; Titus, Albert H.²; Bright, Frank V.¹

Source: Applied Spectroscopy, Volume 60, Issue 9, Pages 220A-236A and 951-1095 (September 2006) , pp. 951-957(7)

Publisher: Society for Applied Spectroscopy

Buy & download fulltext article:

Price: $29.00 plus tax (Refund Policy)

Abstract:

We report the development and analytical figures of merit associated with several new O₂-responsive sensor materials. These new sensing materials are formed by sequestering the luminophore tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) ([Ru(dpp)₃]²⁺) within hybrid xerogels that are composed of two of the following methoxysilanes: tetramethoxysilane, n-propyl-trimethoxysilane, 3,3,3-trifluoropropyl-trimethoxysilane, phenethyl-trimethoxysilane, and pentafluorophenylpropyl-trimethoxysilane. Steady-state and time-resolved luminescence measurements are used to investigate these hybrid xerogel-based sensor materials and elucidate the underlying reasons for the observed performance. The results show that many of the [Ru(dpp)₃]²⁺-doped composites form visually uniform, crack-free xerogel films that can be used to construct O₂ sensors that have linear calibration curves and excellent long-term stability. To the best of our knowledge, the [Ru(dpp)₃]²⁺-doped fluorinated hybrid xerogels also exhibit the highest O₂ sensitivity of any reported [Ru(dpp)₃]²⁺-based sensor platform.

Keywords: LUMINESCENCE; XEROGELS; SENSORS; FLUORINATED PRECURSORS; O2 DETECTION

Document Type: Research article

DOI: http://dx.doi.org/10.1366/000370206778397489

Affiliations: 1: Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000 2: Department of Electrical Engineering, Bonner Hall, University at Buffalo, The State University of New York, Buffalo, New York 14260

Publication date: 2006-09-01

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
Focus Compendium
ingentaconnect is not responsible for the content or availability of external websites