Electrochemical study of ferrocene and nitroxide derivatives intercalated in Zn–Cr and Zn–Al layered double hydroxides

Electrochemical Study of Anionic Ferrocene Derivatives Intercalated in Layered Double Hydroxides: Application to Glucose Amperometric Biosensors

“…The basal spacing of the mono and divalent ferrocene LDH derivatives are respectively 2.227(2) nm and 1.869(3) nm. As expected, these values are slightly higher than that found for other anionic ferrocene derivatives which have been intercalated into LDH, i.e., 2.00 nm for ZnCr-FcSO 3 or ZnAl-FcCO 2 , 1.50 nm for ZnCr-Fc(SO 3 ) 2 and 1.55 nm for ZnAl-Fc(CO 2 ) 2 [14,17].…”

“…In a previous study of the electrochemical behavior of ferrocene sulfonates (FcSO 3 and Fc(SO 3 ) 2 intercalated in LDH, we have highlighted that the electrochemical transfer occurs via an intracrystallite mechanism in which the diffusion of the electrolyte anions through the hybrid material plays a key role on the reversibility of the electron transfer [14]. In the present case also, the replacement of LiClO 4 by a Tris-HCl buffer solution improved the stability and the reversibility of the signal, showing a lower DE p and I pa /I pc tending to 1 (Fig.…”

“…On the other hand, we have published several years ago structural and electrochemical characterizations of hybrid LDH containing organic electroactive molecules bearing an anionic group such as nitrobenzene sulfonate, anthraquinone mono and disulfonate [12], 2,2'-azinobis 3-ethylbenzothiazoline-6-sulfonate (ABTS) [13], nitroxide and ferrocene mono and disulfonate (FcSO 3 , Fc(SO 3 ) 2 ) [14,15]. More recently, other laboratories have reported on the confinement of electroactive molecules within LDH structures, in particular ferrocene derivatives.…”

Clay Modified Electrodes: Present Applications and Prospects

“…The carbon paste electrode modified with layered double hydroxide was prepared by grinding LDH and carbon mixture [32], then silicone oil was added. Zeolites are mixed to graphite in the case of zeolite modified carbon paste electrodes, too [10,70,71].…”

Electrochemical quartz crystal microbalance study of mass transport in thin film of a redox active Ni–Al–Cl layered double hydroxide

“…The layered structures, large surface areas and anion exchange capacities of LDHs make them attractive materials as electrode surface modifiers. The electrochemical responses of [Fe(CN) 6 ] 3À , [Mo(CN) 8 ] 4À , [IrCl 6 ] 2À [6], polyoxometalate ions [7,8], manganese porphyrins [9], and several organometallic [10] and organic anions [11,12] adsorbed in LDH-modified electrodes have been reported.…”