Electrochemical deposition of polypyrrole films on organosilane-modified ITO substrates

Cossement, Damien; Plumier, Fabian; Delhalle, Joseph; Hevesi, L.; Mekhalif, Zineb

doi:10.1016/s0379-6779(02)01260-2

Cited by 34 publications

(29 citation statements)

References 39 publications

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“…For instance, Wang & Wang described hydrogen peroxide detection with a horseradish-functionalized gold-modified ITO electrode in phosphate-buffered solution (PBS, pH 7.0) with a limit of detection of 8 mM estimated at a signal-to-noise ratio of 3 [17]. Yang [21] reported n-hexyltrichlorosilane and 6-(1'-pyrrolyl)-n-hexyltrichlorosilane modification of ITO substrates, for further polypyrrole polymerization of the substrates, which is halfway optoelectronics and sensing applications. Such conducting organic polymers have been found to have extensive sensing applications [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Organosilane-functionalization of nanostructured indium tin oxide films

et al. 2016

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Fabrication and organosilane-functionalization and characterization of nanostructured ITO electrodes are reported. Nanostructured ITO electrodes were obtained by electron beam evaporation, and a subsequent annealing treatment was selectively performed to modify their crystalline state. An increase in geometrical surface area in comparison with thin-film electrodes area was observed by atomic force microscopy, implying higher electroactive surface area for nanostructured ITO electrodes and thus higher detection levels. To investigate the increase in detectability, chemical organosilane-functionalization of nanostructured ITO electrodes was performed. The formation of 3-glycidoxypropyltrimethoxysilane (GOPTS) layers was detected by X-ray photoelectron spectroscopy. As an indirect method to confirm the presence of organosilane molecules on the ITO substrates, cyclic voltammetry and electrochemical impedance spectroscopy (EIS) were also carried out. Cyclic voltammograms of functionalized ITO electrodes presented lower reduction-oxidation peak currents compared with non-functionalized ITO electrodes. These results demonstrate the presence of the epoxysilane coating on the ITO surface. EIS showed that organosilane-functionalized electrodes present higher polarization resistance, acting as an electronic barrier for the electron transfer between the conductive solution and the ITO electrode. The results of these electrochemical measurements, together with the significant difference in the X-ray spectra between bare ITO and organosilane-functionalized ITO substrates, may point to a new exploitable oxide-based nanostructured material for biosensing applications. As a first step towards sensing, rapid functionalization of such substrates and their application to electrochemical analysis is tested in this work. Interestingly, oxide-based materials are highly integrable with the silicon chip technology, which would permit the easy adaptation of such sensors into lab-on-a-chip configurations, providing benefits such as reduced size and weight to facilitate on-chip integration, and leading to low-cost mass production of microanalysis systems.

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Section: Introductionmentioning

confidence: 99%

Organosilane-functionalization of nanostructured indium tin oxide films

et al. 2016

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“…8 Up to now, several studies reported on using pyrrole-functionalized organosilanes to increase the adhesion of the polymers to the substrate. For example, 3-(pyrrol-1-yl) propyl trimethoxylsilane was successfully used by Simon et al 9 and Wu et al 10 for adhering PPy on silicon substrate; Cossement obtained dense and adhesive PPy films by grafting polypyrrole on the 6-(pyrrol-1-yl)-n-hexyl trichlorosilane modified ITO electrode; 11 Guiseppi-Elie et al 5 and Faverolle et al 12 used other pyrrole-substituted organosilane monolayers for grafting PPy on SiO 2 substrates; Shustak et al 13 used n-alkanoic acid monolayer to promote the adhesion of polypyrrole on stainless steel. However, all above mentioned adhesion promoters are 1-substituted pyrrole organosilane.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of New Adhesion Promoter for Grafting Conducting Polymer on Oxide Substrate

Cai¹,

Jaehne²,

Adler³

et al. 2010

Chin. J. Chem.

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For grafting polypyrrole layers on oxidic substrates, the synthesis and characterization of a new adhesion promoter 11-(pyrrol-3-yl) undecyl trimethoxysilane (PyTMS) were described in this article. The oxidation potential of PyTMS was determined by cyclic voltammetry. The grafting behavior of such an adhesion promoter on oxidized surface and chemical deposition of polypyrrole over the modified oxidized surface were studied. The adsorbed layer on the oxidized substrates thus formed was determined by both contact angle measurements and X-ray photoelectron spectroscopy. Chemical polymerization of terminal pyrrole moieties on such substrates yielded adhesive polypyrrole films, and SEM image showed that the morphology of the polypyrrole films was influenced by the experimental conditions.

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“…[10] 2) On the contrary, in surface-initiated polymerization ("grafting from") polymer chains grow in situ from initiator molecules that have been pregrafted to the surface of inorganic particles. [11] The "grafting from" approach is considered to give higher densities because only monomer molecules have to diffuse to the active species.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Self‐Assembling Properties, and Atom Transfer Radical Polymerization of an Alkylated L‐Phenylalanine‐Derived Monomeric Organogel from Silica: A New Approach To Prepare Packing Materials for High‐Performance Liquid Chromatography

Rahman

Czaun

Takafuji

et al. 2008

Chemistry A European J

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The monomer N'-octadecyl-N(alpha)-(4-vinyl)-benzoyl-L-phenylalanineamide (4) based on L-phenylalanine has been simply but effectively synthesized, and its self-assembling properties have been investigated. FTIR and a variable-temperature (1)H NMR spectroscopic investigation demonstrated that the aggregation of compound 4 in various organic solvents is due to the formation of intermolecular hydrogen bonds among the amide moieties. UV/Vis measurements indicated that the multiple pi-pi interactions of the phenyl groups also contribute to the self-assembly. As was observed by (13)C cross-polarization magic-angle spinning (CP/MAS) NMR and variable-temperature (1)H NMR measurements, the ordered alkyl chains also played an important role in the molecular aggregation by van der Waals interactions. Compound 4 was polymerized by surface-initiated atom transfer radical polymerization from porous silica gel to prepare a packing material for HPLC. The results of thermogravimetric analysis showed that a relatively large amount of polymer was grafted onto the silica surface. The organic phase on silica was in a noncrystalline solid form in which the long alkyl chain exists in a less-ordered gauche conformation. Analysis of chromatographic performance for polyaromatic hydrocarbon samples showed higher selectivity than conventional reversed-phase HPLC packing materials.

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Electrochemical deposition of polypyrrole films on organosilane-modified ITO substrates

Cited by 34 publications

References 39 publications

Organosilane-functionalization of nanostructured indium tin oxide films

Organosilane-functionalization of nanostructured indium tin oxide films

Synthesis and Characterization of New Adhesion Promoter for Grafting Conducting Polymer on Oxide Substrate

Synthesis, Self‐Assembling Properties, and Atom Transfer Radical Polymerization of an Alkylated L‐Phenylalanine‐Derived Monomeric Organogel from Silica: A New Approach To Prepare Packing Materials for High‐Performance Liquid Chromatography

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