Application of Polyelectrolytic Temperature-Responsive Hydrogels in Chemical Sensors |
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| Authors: | Margarita Guenther Gerald Gerlach Cathrin Corten Dirk Kuckling Martin Muller Zhangman Shi Joerg Sorber Karl-Friedrich Arndt |
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| Institution: | 1. Institute for Solid-State Electronics, Technische Universitát Dresden, Helmholtzstr. 10, 01069 Dresden, Germany;2. Department of Chemistry and Food Chemistry, Technische Universität Dresden, Helmholtzstr. 10, 01069 Dresden, Germany;3. Institute for Polymer Research, Hohe Str. 10, 01069 Dresden, Germany |
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| Abstract: | Summary: A rapidly expanding field of on-line process monitoring and on-line control in biotechnology, food industry, pharmaceutical industry, process chemistry, environmental measuring technology, water treatment and sewage processing requires the development of new micro fabricated reliable chemical and biosensors that are specific for particular species and can attain the analytic information in a faster, simpler and cheaper manner. Using a functionalised polymer coating in sensors provides the possibility to detect, transmit and record the information regarding the concentration change or the presence of a specific analyte (a chemical or biological substance that needs to be measured) by producing a signal proportional to the concentration of the target analyte. However, the sensor response time and signal reproducibility are limited by the visco-elastical and hysteresis behaviour of the polymer material. We propose some methods improving the properties of the chemical sensors on the basis of thermo-shrinking N-isopropylacrylamide (NIPAAm) copolymer gels. |
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| Keywords: | ATR-FTIR spectroscopy chemical sensor pH-sensitive polyelectrolytic hydrogel swelling behaviour temperature-sensitive |
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