Journal article

Significant changes in pK(a) between bulk aqueous solution and surface immobilized species: ortho-hydroquinones

Abstract:: The pKa values of two ortho-hydroquinone H2Q, systems immobilized at a carbon electrode are investigated using voltammetric methods and compared with those of the corresponding molecules in bulk aqueous solution. A large and significant increase of both pKa values for the successive equilibria H2Q ⇆ HQ- + H+ ⇆ Q2- + 2H+ are observed, which highlight the fact that very significant differences of thermodynamic and chemical behaviour exist between molecules in bulk solution and immobilized at interfaces, both in general and in the case of quinones which are regularly used as electron transfer mediators in electroanalysis and electrocatalysis. © The Royal Society of Chemistry 2013.

Publication status:: Published

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APA Style

Lee, P., Harfield, J., Crossley, A., Pilgrim, B., & Compton, R. (2013). Significant changes in pK(a) between bulk aqueous solution and surface immobilized species: ortho-hydroquinones. RSC ADVANCES, 3(20), 7347–7354.

MLA Style

Lee, P, et al. “Significant Changes in PK(a) between Bulk Aqueous Solution and Surface Immobilized Species: Ortho-Hydroquinones.” RSC ADVANCES, vol. 3, no. 20, 2013, pp. 7347–54.

Chicago Style

Lee, P, J Harfield, A Crossley, B Pilgrim, and R Compton. 2013. “Significant Changes in PK(a) between Bulk Aqueous Solution and Surface Immobilized Species: Ortho-Hydroquinones.” RSC ADVANCES 3 (20): 7347–54.
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Publisher copy:: 10.1039/c3ra00164d

Authors

+ Lee, P More by this author

Role:: Author

+ Harfield, J More by this author

Role:: Author

+ Crossley, A More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Materials
Role:: Author

+ Pilgrim, B More by this author

Role:: Author

+ Compton, R More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Chemistry
Sub department:: Physical & Theoretical Chem
Role:: Author

Journal:: RSC ADVANCES More from this journal
Volume:: 3
Issue:: 20
Pages:: 7347-7354
Publication date:: 2013-01-01
DOI:: 10.1039/c3ra00164d
EISSN:: 2046-2069
ISSN:: 2046-2069

Language:: English
Pubs id:: pubs:405080
UUID:: uuid:ecf35ec0-aa88-4aea-b84f-e4a5dc74e594
Local pid:: pubs:405080
Source identifiers:: 405080
Deposit date:: 2013-11-17
ARK identifier:: ark:/29072/ora_ecf35ec0aa884aeab84fe4a5dc74e594

Terms of use

Copyright date:: 2013

Licence:: Terms and Conditions of Use for Oxford University Research Archive

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