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Potentiometric anion response of poly(5,15-bis(2-aminophenyl)porphyrin) electropolymerized electrodes
被引:24
作者:
Volf, R
[1
]
Shishkanova, TV
[1
]
Matejka, P
[1
]
Hamplová, M
[1
]
Král, V
[1
]
机构:
[1] Inst Chem Technol, Dept Analyt Chem, CR-16628 Prague 6, Czech Republic
关键词:
porphyrin;
metalloporphyrin;
electropolymerization;
ion-selective electrodes;
anion binding;
D O I:
10.1016/S0003-2670(98)00742-9
中图分类号:
O65 [分析化学];
学科分类号:
070302 ;
081704 ;
摘要:
The preparation of novel poly(porphyrin) film based on the 5,15-bis(2-aminophenyl) porphyrin from aqueous solutions with and without porphyrin core modification is reported. Anion-selective binding for inorganic ions was found 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 reflect 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 rights reserved.
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页码:197 / 205
页数:9
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