https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:40870 Tue 19 Jul 2022 14:17:29 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30592 6—FC) upon exposure to perfluorooctanoic acid (PFOA), the most common fluorosurfactant. FC is employed as a redox probe to monitor the switch on-off response of the SAM formed on gold electrode surface. In an effort to understand the hydrophilic terminate group's influence from the surfactant, we dope the pristine C₆—FC SAM with 6-amino-1-hexanethiol (C₆—NH₂), 1-hexanethiol (C₅—CH₃), or 6-mercaptohexanoic acid (C₅—COOH) via a thiol-gold bond. We also dope it with 1-dodecanethiol (C₁₁—CH₃) or 12-mercaptododecanoic acid (C₁₁–COOH) to investigate the length effect of the carbon chain. We observe there is a similar switch on-off response either from the presence of PFOA or from the doping C₅—COOH/C₁₁–COOH, suggesting the insertion of PFOA into the C₆—FC SAM, which is also evidenced by electrochemical quartz crystal microbalance (EQCM) and Raman spectrum. This research paves the way towards the development of an electrochemical sensor and an approach for remediation of the fluorosurfactants.]]> Sat 24 Mar 2018 07:24:00 AEDT ]]>