Synthesis and characterization of polypyrrole/vanadium pentoxide nanocomposite aerogels

Wong, H. P.; Dave, Bakul C.; Leroux, F.; Harreld, John H.; Dunn, Bruce; Nazar, Linda F.

doi:10.1039/a706614g

Cited by 116 publications

(83 citation statements)

References 17 publications

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“…PEG is an oxygenated polymer with the potential to influence or repair the membrane permeability caused by injuries or diseases [1,2] and PPy is one of the most studied nitrogenated biocompatible polymers used as a biosensor, cell growth supporter for nerve cells, and substrate for junction between neurons and microelectrodes [3,4]. The PPy potential for transferring electric charges is related to the alternated multiple-single chemical bonds in the rings of its structure.…”

Section: Introductionmentioning

confidence: 99%

XPS Study of the Chemical Structure of Plasma Biocopolymers of Pyrrole and Ethylene Glycol

González-Torres

Olayo

Cruz

et al. 2014

Advances in Chemistry

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An XPS study about the structure of plasma biocopolymers synthesized with resistive radio frequency glow discharges and random combinations of ethylene glycol, pyrrole, and iodine, as a dopant, is presented in this work. The collisions of molecules produced structures with a great variety of chemical states based in the monomers, their combinations, crosslinking, doping, fragmentation, and oxidation at different levels in the plasma environment. Iodine appears bonded in the copolymers only at high power of synthesis, mainly as C-I and N-I chemical bonds. Multiple bonds as C≡C, C≡N, C=O, and C=N were found in the copolymers, without belonging to the initial reagents, and were generated by dehydrogenation of intermediate compounds during the polymerization. The main chemical states on PEG/PPy/I indicate that all atoms in pyrrole rings participate in the polymerization resulting in crosslinked, partially fragmented, and highly oxidized structures. This kind of analysis can be used to modify the synthesis of polymers to increase the participation of the most important chemical states in their biofunctions.

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Section: Introductionmentioning

confidence: 99%

XPS Study of the Chemical Structure of Plasma Biocopolymers of Pyrrole and Ethylene Glycol

González-Torres

Olayo

Cruz

et al. 2014

Advances in Chemistry

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“…Manganese oxide/polypyrrole nanocomposites were studied by Sharma et al [7]. Vanadium oxide and polypyrrole nanocomposite aerogel was examined by Wong et al [8]. For intercalation of conductive polymer, Kerr et al reported polyaniline-intercalated molybdenum oxide [9].…”

Section: Open Accessmentioning

confidence: 99%

Synthesis of Polypyrrole-Intercalated Grafted Zirconium Phosphate Films by Anodic Electrodeposition and Their Electrochemical Capacities

et al. 2010

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Ternary hybrid film composed of -zirconium phosphate nanosheet, 1,2-bis(dimethylchlorosilyl)ethane and polypyrrole was prepared by anodic electrodeposition. In the hybrid film, ordered -zirconium nanosheets with grafts by silylation lay down parallel to the substrate and the polypyrrole molecules were intercalated between the nanosheets. The electrochemical measurements confirmed that the hybrid film indicated capacitive behavior and the redox activity increase by approximately 25%.

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“…Supercritically dried aerogels exhibited porosity fractions between 90-96 %. Skeletal density values were between 2.1-3. of that for an electrode prepared with pure V 2 0 5 aerogel (dried from ambient pentane) and cycled under comparable conditions [7,11]. The electronic and electrochemical activity of the PPy phase in PGP hybrid materials appears to be insignificant compared to its mass contribution in this material.…”

Section: Post-gelation Polymerizationmentioning

confidence: 99%

“…A key feature in designing this hybrid material is the need to have a homogeneous distribution of the conducting polymer so that good access to the V 2 0 5 phase is achieved. Our prior paper on V 2 0 5 /PPy nanocomposite materials focused primarily on the interaction between the constituent phases and its influence on electrical and electrochemical properties [7]. The present paper considers the microstructural development of these hybrid networks using alternative synthetic routes.…”

Section: Introductionmentioning

confidence: 99%

Design and synthesis of inorganic–organic hybrid microstructures

Harreld

Dunn

Nazar

1999

International Journal of Inorganic Materials

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Synthesis and characterization of polypyrrole/vanadium pentoxide nanocomposite aerogels

Cited by 116 publications

References 17 publications

XPS Study of the Chemical Structure of Plasma Biocopolymers of Pyrrole and Ethylene Glycol

XPS Study of the Chemical Structure of Plasma Biocopolymers of Pyrrole and Ethylene Glycol

Synthesis of Polypyrrole-Intercalated Grafted Zirconium Phosphate Films by Anodic Electrodeposition and Their Electrochemical Capacities

Design and synthesis of inorganic–organic hybrid microstructures

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