期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 125, 期 4, 页码 2993-2999出版社
WILEY-BLACKWELL
DOI: 10.1002/app.36348
关键词
composites; conducting polymers; ion exchangers; selectivity; sensor
资金
- Council of Scientific and Industrial Research (CSIR), India
We hereby report a new conducting polymer-based calcium ion exchanger, namely polyindole-camphorsulfonic acid (PIn-CSA) composite, and its application in the development of calcium ion-selective electrode. The processable PIn-CSA composite is developed by homogenizing equimolar ratio of chemically synthesized PIn and CSA in tetrahydrofuran. The homogenized PIn-CSA composite is cast over the Pt disc electrode under ambient conditions. The ion-sensor exhibits near Nernstian response for Ca2+ over a concentration range of 2 x 10(-5) to 1 x 10(-2) M with a response time of 8 s. The sensor can be used for a period of over 3 months without any major drift in its baseline potential. The useful pH range of the ion-sensor was found out to be 4.0-8.0. (C) 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
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