Potentiometric anion response of poly(5,15-bis(2-aminophenyl)porphyrin) electropolymerized electrodes

Authors
Volf, R Shishkanova, TV Matejka, P Hamplova, M Kral, V
Citation
R. Volf et al., Potentiometric anion response of poly(5,15-bis(2-aminophenyl)porphyrin) electropolymerized electrodes, ANALYT CHIM, 381(2-3), 1999, pp. 197-205
Citations number
44
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
ANALYTICA CHIMICA ACTA
ISSN journal
00032670 → ACNP
Volume
381
Issue
2-3
Year of publication
1999
Pages
197 - 205
Database
ISI
SICI code
0003-2670(19990216)381:2-3<197:PAROPE>2.0.ZU;2-P
Abstract
The preparation of novel poly(porphyrin) film based on the 5,15-bis(2-amino phenyl) porphyrin from aqueous solutions with and without porphyrin core mo dification is reported. Anion-selective binding for inorganic ions was foun d to be in the order: Sal(-) < F- < CH3COO- approximate to ClO4- < SO42- approximate to Cl- < SCN - < NO3- < I- and SO42- < F- < Sal(-) < CLO4- < CH3COO- < NO3- < Cl- < SCN- < I- respectively, for the free base film (not complexed) and the poly(porphyrin ) film complexed with metal. The potentiometric selectivity patterns reflec t different response mechanisms of the polymerized electrode: 1. ion-exchange for not complexed film, and 2. selective axial ligation between metal center and certain anion for poly (porphyrin) film complexed with metal. (C) 1999 Elsevier Science B.V. All r ights reserved.