Ion pairing between dissolved poly(o-phenylenediamine) and halogenide ions |
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| Authors: | Jun Yano Tsutomu Nagaoka |
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| Institution: | aDepartment of Engineering, University of East Asia, Ichinomiya-Gakuencho 2-1, Shimonoseki, Yamaguchi 751, Japan;bDepartment of Applied Chemistry, Faculty of Engineering, Yamaguchi University, Tokiwadai 2557, Ube, Yamaguchi 755, Japan |
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| Abstract: | An electrically conductive polymer, poly(o-phenylenediamine) (PoPD), is soluble in dimethylsulfoxide (DMSO) without any pretreatment. Cyclic voltammograms of dissolved PoPD were measured in DMSO solutions containing halogenide ions and two reversible redox peak currents were evident. The redox potential shifted with the concentration of the dissolved halogenide ion. The relationship between the potential shift and the concentration determined the relative association constant of PoPD for four halogenide ions: 104 mol−1 dm−3 for F−; 32 mol−1 dm−3 for Cl−; 29 mol−1 dm−3 for Br− and 9 mol−1 dm−3 for I−. |
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| Keywords: | Conductivle polymers Ion pairing Poly(o-phenylenediamine) Halogenides Association constants |
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