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The mass transfer and charge transport properties of osmium bis(2, 2'-bipyridyl)- containing 4-vinylpyridine

Kelly, David Michael (1996) The mass transfer and charge transport properties of osmium bis(2, 2'-bipyridyl)- containing 4-vinylpyridine. PhD thesis, Dublin City University.

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Abstract

The Mass Transfer and Charge Transport Properties of Osmium bis(2,2’-bipyridyl)- containing 4-Vinylpyridine / Styrene Copolymers. In Chapter 1, some of the techniques used for the characterisation of the electrochemical properties of electrode modifying materials are introduced. A brief review of the mass transfer and charge transport studies of redox materials is presented. In Chapter 2, the admittance characteristics of crystal coatings are studied. This analysis allows the rigidity and resident layer mass of the coatings to be probed as a function of the electrolyte type and concentration. In Chapter 3, the charge transport properties of [Os(bipy)2(PVPx)ioCl]+ , where x signifies the percentage of poly 4-vinylpyridine in the poly 4-vinylpyridine/styrene copolymer backbone, are probed as a function of the electrolyte type and concentration. Activation parameters are evaluated to aid diagnosis of the rate determining steps. The remainder of the thesis deals with the mass transfer properties of the highest and lowest styrene content metallopolymers. In Chapters 4 and 5, the redoxswitching- induced mass changes of [Os(bipy)2(PVP33)ioCl]+ coated crystals are investigated as a function of the HCIO4 and UCIO4 concentration of the contacting electrolyte and the experimental timescale using the Electrochemical Quartz Crystal Microbalance (EQCM). Comparison with [Os(bipy)2(PVPioo)ioCl]+ is made and a relationship between the ease of solvent transfer and the rate of charge transport is suggested. In Chapter 6 , the effect of acetonitrile on the mass transfer and charge transport properties of [Os(bipy)2(PVPioo)ioCl]+ crystal coatings is investigated. The relationship between the degree of polymer swelling, the ease of mass transfer and the rate of charge transport is illustrated.

Item Type:Thesis (PhD)
Date of Award:1996
Refereed:No
Additional Information:In conjunction with the School of Chemistry, University of Leicester.
Supervisor(s):Vos, Johannes G.
Uncontrolled Keywords:Electrochemistry; Transport theory
Subjects:Physical Sciences > Electrochemistry
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health > School of Chemical Sciences
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 3.0 License. View License
ID Code:18918
Deposited On:22 Aug 2013 14:16 by Celine Campbell. Last Modified 22 Aug 2013 14:16

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