Electrochemical studies p-Sulfonatocalix[4]Arene in ionic liquid as supporting electrolyte

Basirun, Wan Jefrey and Alias, Y. and Manan, N.S.A. and Hardacre, C. (2010) Electrochemical studies p-Sulfonatocalix[4]Arene in ionic liquid as supporting electrolyte. Malaysian Journal of Science, 29 (2). pp. 174-179. ISSN 1394-3065,

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The electrochemical behaviour of sodium p-sulfonatocalix[4]arene (s-psc4) was studied. In this study ionic liquid/water mixtures were used as electrolyte, namely, [BMIM][BF4]/water mixture and [BMIM][OTf]/water mixture ([BMIM] = 1 -butyl 3-methyl imidazolium, BF 4 = tetrafluoroborate, OTf = trifluoromethanesulfonate). S-psc 4 can be oxidised at 0.84 V and 0.83 V in [BMIM][BF 4]/water and [BMIM][OTf]/water respectively. The reaction is an irreversible process for both systems. The number of electron transferred in this electrochemical process is one electron and the diffusion coefficient, (D) for both systems was 1.15 × 10-8 cm2 s-1 and 1.67 × 10-8 cm2 s-1 respectively. The anodic potentials were affected by temperature and the activation energy, (Ed) was 18.18 kJ mol-1 and 18.78 kJ mol-1 in [BMIM][BF4]/water mixture and [BMIM][OTf/water mixture respectively.

Item Type: Article
Additional Information: Department of Chemistry, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science > Department of Chemistry
Depositing User: Miss Malisa Diana
Date Deposited: 30 Jul 2013 00:35
Last Modified: 31 Jan 2019 08:17
URI: http://eprints.um.edu.my/id/eprint/7552

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