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Polymers 2018, 10(9), 1015; https://doi.org/10.3390/polym10091015

New Methods to Study the Behavior of Molecularly Imprinted Polymers in Aprotic Solvents

1
Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szent Gellert ter 4., H-1111 Budapest, Hungary
2
MTA-BME Research Group of Technical Analytical Chemistry, Szent Gellert ter 4., H-1111 Budapest, Hungary
*
Authors to whom correspondence should be addressed.
Received: 2 August 2018 / Revised: 3 September 2018 / Accepted: 6 September 2018 / Published: 12 September 2018
(This article belongs to the Special Issue Molecularly Imprinted Polymers)
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Abstract

This work presents three new experimental methods for studying molecular imprinting. The electric conductivity measurements of the pre-polymerization mixture of amine templates in an aprotic solvent provide evidence of ionic dissociation of the pre-polymerization complexes. The displacement measurement of the template propranolol from its molecularly imprinted polymer (MIP) using a quaternary ammonium ion in toluene, shows that this MIP behaves as an ion exchanger even in a non-polar solvent. The same experiment also shows that template binding to the MIP from toluene involves ionic interaction. The third experimental method introduced here serves to study the models of template binding on MIPs. To this end the binding isotherm of propranolol (PR) has been measured on a polymer mixture consisting of non-imprinted control polymer (NIP) and a stronger binding acidic polymer, respectively. All three methods are suitable for studying several other imprinting systems. View Full-Text
Keywords: molecular imprinting; propranolol; beta blocker; conductivity; displacement; adsorption isotherm; ion exchange; Langmuir molecular imprinting; propranolol; beta blocker; conductivity; displacement; adsorption isotherm; ion exchange; Langmuir
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Nagy-Szakolczai, A.; Dorkó, Z.; Tóth, B.; Horvai, G. New Methods to Study the Behavior of Molecularly Imprinted Polymers in Aprotic Solvents. Polymers 2018, 10, 1015.

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