Metal chelation and spatial profiling of components in crown ether functionalised conducting copolymer films

Glidle, A., Hillman, A.R., Ryder, K.S., Smith, E.L., Cooper, J.M. , Dalgliesh, R., Cubitt, R. and Geue, T. (2009) Metal chelation and spatial profiling of components in crown ether functionalised conducting copolymer films. Electrochimica Acta, 55(2), pp. 439-450. (doi:10.1016/j.electacta.2009.04.027)

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Publisher's URL: http://dx.doi.org/10.1016/j.electacta.2009.04.027

Abstract

Crown ether functionalised conducting polymer films were used to complex barium ions from acetonitrile solution. It was found that fully-functionalised N-derivatized polypyrrole films do not possess adequate mechanical stability, but dilution with unfunctionalised bithiophene co-monomer leads to a series of copolymer films with excellent stability. Film reactivity, composition and structure were investigated using electrochemical, nanogravimetric, FTIR, XPS and neutron reflectivity techniques. The first three of these provided spatially integrated barium populations and neutron reflectivity provided spatially resolved compositional profiles. Measurements at various stages of film fabrication yielded spatial distributions of co-monomer. crown ether, solvent and barium (as perchlorate) components. Critically, the amount of free volume to accommodate crown motifs and barium within the film was limited by the film's internal microstructure and solvent content; the low solvent volume fraction creates a different local environment to solution.

Item Type:Articles
Keywords:Acetonitrile, bithiophene, complexes, conducting polymer, crown ether, electrodes, fabrication, films, interfaces, ions, modified electrode, neutron reflectivity, pentafluorophenyl-pyrrole, polymer, polypyrrole films, polyvinylferrocene films, redox, reflectivity, salvation, science, si, solvation, spatial distribution, spectroscopy
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Glidle, Dr Andrew and Cooper, Professor Jonathan
Authors: Glidle, A., Hillman, A.R., Ryder, K.S., Smith, E.L., Cooper, J.M., Dalgliesh, R., Cubitt, R., and Geue, T.
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
College/School:College of Science and Engineering > School of Engineering > Biomedical Engineering
Journal Name:Electrochimica Acta
ISSN:0013-4686
ISSN (Online):1873-3859
Published Online:21 April 2009

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