Polysubstituted ferrocenes as tunable redox mediators.

ABSTRACT: A series of four ferrocenyl ester compounds, 1-methoxycarbonyl- (1), 1,1'-bis(methoxycarbonyl)- (2), 1,1',3-tris(methoxycarbonyl)- (3) and 1,1',3,3'-tetrakis(methoxycarbonyl)ferrocene (4), has been studied with respect to their potential use as redox mediators. The impact of the number and position of ester groups present in 1-4 on the electrochemical potential E_1/2 is correlated with the sum of Hammett constants. The 1/1⁺ -4/4⁺ redox couples are chemically stable under the conditions of electrolysis as demonstrated by IR and UV-vis spectroelectrochemical methods. The energies of the C=O stretching vibrations of the ester moieties and the energies of the UV-vis absorp

SUBMITTER: Waniek SD 

PROVIDER: S-EPMC6009500 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature