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Fluorescent materials chemical sensors

As opposed to conventional analytical techniques, optical sensors and biosensors, particularly those employing absorption and fluorescence-based sensing materials potentially allow for measurement through transparent or semi-transparent materials in a non-destructive fashion4, 5> 9 10. Chemical sensor technology has developed rapidly over the past years and a number of systems for food applications have been introduced and evaluated with foods. [Pg.502]

Wolfbeis OS (2005) Materials for fluorescence-based optical chemical sensors. J Mater Chem 15 2657-2669... [Pg.222]

Wolfbeis, O. S. Materials for Fluorescence-Based Optical Chemical Sensors. J. Mater. Chem. 2005, 15, 2657-2669... [Pg.113]

Given the challenges that are associated with creating BPs that can deliver active proteins and/or diversified xerogel-based sensor platforms for chemical sensor applications, we have developed automated systems that can rapidly prepare large numbers of BP or xerogel-based materials and rapidly obtain fluorescence-based spectroscopic information from these formulations. Ultimately, these laboratory... [Pg.401]

Conjugated polymers are powerfiil fluorescent materials, which makes them suitable for applications as chemical sensors. Chart 13.1 presents the structures of some typical polymers that are applicable for the detection of analytes at low concentrations. These polymers include poly(p-phenylene ethynylene), PPE poly(p-phenylene vinylene), PPV polyacetylene and polyfluorene. Those polymers bearing ionizable pendant groups are water-soluble polyelectrolytes. [Pg.349]

Wolfbeis OS (1991) Fiber optic chemical sensors and biosensors, vol 1. CRC Press, Boca Raton, FL Wolfbeis OS (ed) (1992) Fiber optic chemical sensors and biosensors, vol 2. CRC Press, Boca Raton, FL Wolfbeis OS (2005) Materials for fluorescence-based optical chemical sensors. J Mater Chem 15 2657-2669 Wolfbeis OS, Posch HE (1986) Fiber-optic fluorescing sensor for ammonia. Anal Chim Acta 185 321-327 Wolfbeis OS, Weis LJ, Leiner MJP, Ziegler WE (1988) Fiber-optic fluorosensor for oxygen and carbon dioxide. Anal Chem 60 2028-2030... [Pg.222]

Most commercially available environmental fiber-optic chemical sensors are for pH and oxygen monitoring in water and wastewater. The monitoring of unusual changes in oxygen and pH can be used as an indirect indication of the presence of pollutants. These sensors are based on fluorescent dyes as the sensing material. The optical fiber and the sensing elements are covered with a metal jacket that provides immunity from harsh environmental conditions. [Pg.111]

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See also in sourсe #XX -- [ Pg.211 , Pg.212 , Pg.213 ]



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