Abstract
Pyrolytic graphite electrodes cast with multilayer films of didodecyldimethylammonium bromide (DDAB) or lauric acid (LA) are used to study the electrochemical behaviour of spinach ferredoxin and multiheme cytochromes c 3 (from Desulfovibrio vulgaris Hildenborough, D. desulfuricans Norway and D. gigas). As shown by the pH-dependence of their electrochemical behaviour, DDAB films act as anion exchanger, incorporating the redox proteins upon repetitive cycling, provided they bear a global negative charge. Results support the electrostatic nature of the interactions between negatively (or positively) charged redox species and positively (or negatively) charged headgroups in the DDAB (or LA) films, respectively. Because of the appearance of a new voltammetric couple at less negative potentials, it can be assumed that modifications of cytochrome c 3 incorporated within the multilayer DDAB or LA films occur upon repetitive cycling.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
