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Opto-Chemical Micro-Capillary Clocks

Wilhelm, S. and Wolfbeis, Otto S. (2010) Opto-Chemical Micro-Capillary Clocks. Mikrochimica acta 171 (3-4), pp. 211-216.

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Opto-chemical capillary clocks are presented that are based on the measurement of a colored segment in a microchannel (a capillary). Color is created by a chromogenic chemistry involving the oxidation of a (virtually colorless) leuco-dye. Poly(ethylene glycol) (PEG) is used as a solvent, and indigo and thioindigo (in their reduced leuco forms) act as oxygen-sensitive dyes. The clock is started by ...


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Item type:Article
Date:24 September 2010
Institutions:Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik > Chemo- und Biosensorik (Prof. Antje J. Bäumner, formerly Prof. Wolfbeis)
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Keywords:Optical timer - Chromogenic chemistry - Indigo - Oxygen - Clock - Poly(ethylene glycol)
Dewey Decimal Classification:500 Science > 540 Chemistry & allied sciences
Created at the University of Regensburg:Unknown
Item ID:19954
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