Enhanced electron transfer for myoglobin in surfactant films on electrodes

Autor:	Alaa Eldin F. Nassar, James F. Rusling
Rok vydání:	1993
Předmět:	Ammonium bromide Aqueous solution Chemistry Inorganic chemistry General Chemistry Electrochemistry Biochemistry Redox Catalysis chemistry.chemical_compound Electron transfer Colloid and Surface Chemistry Pulmonary surfactant Myoglobin Pyrolytic carbon
Zdroj:	Journal of the American Chemical Society. 115:11891-11897
ISSN:	1520-5126 0002-7863
DOI:	10.1021/ja00078a030
Popis:	The Fe(III)/Fe(II) redox couple of the heme protein myoglobin (Mb) gave standard electron-transfer rate constants about 1000-fold larger in liquid crystal films of didodecyldimethyl ammonium bromide (DDAB) on pyrolytic graphite (PG) electrodes than in aqueous solutions. Electron-transfer rates of Mb were also enhanced in films of soluble cationic and anionic surfactants adsorbed on PG. Results suggest a role for strongly adsorbed surfactant at electrode-film interfaces, which may prevent adsorption of macromolecular impurities which can block electron transfer. Mb-DDAB films were prepared by spontaneous insertion of Mb from solution into water-insoluble cast films of DDAB
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8fb276b5e77d6eb9efc71d6f575275c2 https://doi.org/10.1021/ja00078a030 Zobrazit plný text záznamu