A Novel Sensor Based on Layer‐by‐Layer Hybridized Phosphomolybdate and Poly(ferrocenylsilane) on a Cysteamine Modified Gold Electrode

Abstract

A novel sensor have been constructed by layer-by-layer hybridizing phosphomolybdate (POM) and poly(ferrocenylsilane) (PFS) on a cysteamine modified gold electrode. The properties and performance of the sensor have been measured by electrochemistry and atomic force microscopy in detail. The results showed that the constructed multilayers modified gold electrode combined the properties of POM and PFS, and exhibited good electrocatalytic ability to a series of inorganic ions, including BrO , ascorbic acid and SO 2À 3 . The well catalytic activity of the sensor was ascribed to the porous structure of hybrid POM-PFS multilayer. The resulted sensor exhibited extremely fast amperometric response, low detection limit, high selectivity and wide linear range to these analyses.

Direct electron transfer of cytochrome c and its biosensor based on poly(ferrocenylsilane)–DNA composite film

“…Second, the DNA molecules in PFS-DNA film might enhance the electron transfer by the stacked base pairs or the phosphate backbone [24][25][26]. Last, the porous configuration of PFS-DNA film was helpful for the diffusion of electrolyte between Cyt c and electrode surface, which might improve the electron transfer [34]. Fig.…”

Printing “Smart” Inks of Redox-Responsive Organometallic Polymers on Microelectrode Arrays for Molecular Sensing

“…18,26−29 Corresponding papers discuss intra-and interchain electron transfer during electrochemical oxidation/reduction 30,31 as well as the effect of chemical oxidizing and reducing agents 23 and redox behavior of PFS attached to the surface of various substrates. 20,21 PFSdecorated electrodes have been used for electrochemical sensing of ascorbic acid, 20,32−34 hydrogen peroxide, 34 glucose, 35,36 and inorganic ions 37 and/or to enhance detection sensitivity 18,21 and photoconductivity. 38 MEAs have been successfully utilized in many areas in biomedical applications 1,3−5 as well as in environmental sensing 2,39,40 and food quality monitoring.…”

“…The variation of side-group structure allows one to tune the physical and chemical properties of PFS, while the ferrocene units remain responsible for preserving the redox activity. − The stimulus-responsive behavior implies that changes of the redox environmental conditions trigger changes of the oxidation state of the iron atom in the ferrocene group. We note that redox chemistry of PFS, including chemical and electrochemical redox transitions, has been subject of several studies. ,− Corresponding papers discuss intra- and interchain electron transfer during electrochemical oxidation/reduction , as well as the effect of chemical oxidizing and reducing agents and redox behavior of PFS attached to the surface of various substrates. , PFS-decorated electrodes have been used for electrochemical sensing of ascorbic acid, ,− hydrogen peroxide, glucose, , and inorganic ions and/or to enhance detection sensitivity , and photoconductivity …”

Multifunctional, complex polymers for functional and stimuli-responsive coatings

“…[174][175][176][177] Irrespective of the exact explanation regarding its origin, the manifestation of the phenomenon of co-non-solvency is well established and has been widely observed for 2 different combinations of polymers, solvents and co-solvents. 172,[178][179][180][181] Co-non-and cosolvency of polymer brushes is of interest e.g., for surfaces with tunable friction and adhesion properties in smart drug releasing devices, for the pick-up and release of nanoparticles, regulation of channel permeability in fluidics, as well as sensing devices. 12,[182][183][184][185] For instance, Sun et al 185 reported the fabrication of a microchip with a nanogelcontaining smart membrane capable to undergo a reversible swelling-shrinking volume transition to control the permeability of the membrane in response to variations in ethanol concentration.…”