Premium
Calcium ion‐sensor based on polyindole‐camphorsulfonic acid composite
Author(s) -
Pandey Prem C.,
Chauhan Dheeraj S.,
Prakash Rajiv
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.36348
Subject(s) - composite number , materials science , ion , calcium , electrode , tetrahydrofuran , conductive polymer , polymer chemistry , polymer , analytical chemistry (journal) , composite material , chemistry , organic chemistry , solvent , metallurgy
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 Ca 2+ over a concentration range of 2 × 10 −5 to 1 × 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. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012