Novel approach of immobilization of calix[4]arene type ionophore in ‘self-plasticized’ polymeric membrane

Elżbieta Malinowska , Lidia Gawart , Paweł Parzuchowski , Gabriel Rokicki , Zbigniew Brzózka

Abstract

The design of ion-selective membranes based on the immobilization of the calix[4]arene tetraethyl ester containing at their wider rim one polymerizable group in a linear isodecyl acrylate (IDA)/methyl methacrylate (MM) copolymer is reported. Preliminary studies were focused on an optimization of polymeric matrix based on IDA/MM copolymers to make them suitable for preparing ion-selective membranes. The effect of polymer composition (IDA:MM ratio), matrix features (glass transition temperature and molecular weight) and compatibility with electro-active components was examined. It was found that the copolymer of IDA:MM=3:7 ratio exhibited the best mechanical properties. The feasibility of the application of IDA/MM matrix for ion-selective membranes was examined using as a model ionophore, 4-tert-butyl calix[4]arene tetraethyl ester. Electrodes based on these membranes showed near theoretical sensitivity towards sodium concentration and selectivity similar to reported for classical plasticized PVC-based membranes. Methacrylamide derivative of calixarene was immobilized in IDA/MM polymer of optimized composition. Potentiometric measurements revealed that the selectivity and the slope of the response curve obtained for electrodes employing membranes with immobilized calixarene are essentially the same as for the membranes containing a free ionophore, while the lifetime was improved from 2 to 6 months.
Author Elżbieta Malinowska (FC / IBC / DM)
Elżbieta Malinowska,,
- Department Of Microbioanalytics
, Lidia Gawart - [Warsaw University of Technology (PW)]
Lidia Gawart,,
-
- Politechnika Warszawska
, Paweł Parzuchowski (FC / CPCT)
Paweł Parzuchowski,,
- Chair Of Polymer Chemistry And Technology
, Gabriel Rokicki (FC / CPCT)
Gabriel Rokicki,,
- Chair Of Polymer Chemistry And Technology
, Zbigniew Brzózka (FC / IBC / DM)
Zbigniew Brzózka,,
- Department Of Microbioanalytics
Journal seriesAnalytica Chimica Acta, ISSN 0003-2670
Issue year2000
Vol421
No1
Pages93-101
Keywords in EnglishIonophore immobilization, Self-plasticized polymeric matrix, Sodium-selective electrodes
ASJC Classification1607 Spectroscopy; 2304 Environmental Chemistry; 1303 Biochemistry; 1602 Analytical Chemistry
DOIDOI:10.1016/S0003-2670(00)00999-5
URL http://www.sciencedirect.com/science/article/pii/S0003267000009995
Languageen angielski
File
2000_Novel approach of immobilization of calix4arene type.pdf 150.35 KB
Score (nominal)40
Score sourcejournalList
Publication indicators WoS Citations = 62; Scopus Citations = 68; GS Citations = 75.0; Scopus SNIP (Source Normalised Impact per Paper): 2000 = 1.158; WoS Impact Factor: 2006 = 2.894 (2) - 2007=3.348 (5)
Citation count*75 (2015-10-25)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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