Intra- and Inter-molecular Sulf- hydryl Hydrogen Bonding: Facilitating Proton Transfer Events for Determination of pH in Sea Water

Sisodia, Neel; Miranda, Monica; McGuinness, Kay L.; Wadhawan, Jay D.; Lawrence, Nathan S.

Abstract

© 2020 Wiley-VCH GmbH This work presents the electrochemical response of a 2-(methylthio)phenol glassy carbon based electrode for a promising voltammetric pH sensor in both buffered and low-buffered solutions. Electropolymerization of the redox species was performed with the resulting polymer presenting a Nernstian response in buffered media, with a sensitivity of 51 mV/pH unit. The effectiveness of the sulfhydryl bond to facilitate proton transfer from the bulk solution to the phenol molecules has been confirmed, providing an accurate pH measurement of 8.28 in sea water media, compared to that measured with a calibrated glass pH probe of 8.30.

Citation

Sisodia, N., Miranda, M., McGuinness, K. L., Wadhawan, J. D., & Lawrence, N. S. (in press). Intra- and Inter-molecular Sulf- hydryl Hydrogen Bonding: Facilitating Proton Transfer Events for Determination of pH in Sea Water. Electroanalysis, https://doi.org/10.1002/elan.202060332

• Journal Article Type: Article
• Acceptance Date: Aug 12, 2020
• Online Publication Date: Nov 18, 2020
• Deposit Date: Dec 18, 2020
• Publicly Available Date: Nov 19, 2021
• Journal: Electroanalysis
• Print ISSN: 1040-0397
• Electronic ISSN: 1521-4109
• Publisher: Wiley
• Peer Reviewed: Peer Reviewed
• DOI: https://doi.org/10.1002/elan.202060332
• Public URL: https://hull-repository.worktribe.com/output/3671057