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A Fluorescent Thermometer Based on a Pyrene-Labeled Thermoresponsive Polymer
Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, Humboldtstrasse 10, 07743 Jena, Germany
Dutch Polymer Institute (DPI), John F. Kennedylaan 2, 5612 AB Eindhoven, Netherlands
Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, Netherlands
Supramolecular Chemistry group, Department of Organic Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium
* Author to whom correspondence should be addressed.
Received: 21 June 2010; in revised form: 23 July 2010 / Accepted: 20 August 2010 / Published: 27 August 2010
Abstract: Thermoresponsive polymers that undergo a solubility transition by variation of the temperature are important materials for the development of ‘smart’ materials. In this contribution we exploit the solubility phase transition of poly(methoxy diethylene glycol methacrylate), which is accompanied by a transition from hydrophilic to hydrophobic, for the development of a fluorescent thermometer. To translate the polymer phase transition into a fluorescent response, the polymer was functionalized with pyrene resulting in a change of the emission based on the microenvironment. This approach led to a soluble polymeric fluorescent thermometer with a temperature range from 11 °C to 21 °C. The polymer phase transition that occurs during sensing is studied in detail by dynamic light scattering.
Keywords: pyrene; DEGMA; stimuli-responsive polymer; lower critical solution temperature (LCST); RAFT polymerization; solvatochromism; fluorescent thermometer
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Pietsch, C.; Vollrath, A.; Hoogenboom, R.; Schubert, U.S. A Fluorescent Thermometer Based on a Pyrene-Labeled Thermoresponsive Polymer. Sensors 2010, 10, 7979-7990.
Pietsch C, Vollrath A, Hoogenboom R, Schubert US. A Fluorescent Thermometer Based on a Pyrene-Labeled Thermoresponsive Polymer. Sensors. 2010; 10(9):7979-7990.
Pietsch, Christian; Vollrath, Antje; Hoogenboom, Richard; Schubert, Ulrich S. 2010. "A Fluorescent Thermometer Based on a Pyrene-Labeled Thermoresponsive Polymer." Sensors 10, no. 9: 7979-7990.