Electrochemical oxidation of naphthylamine in NH4 F, 2.3 HF medium

Geniès, E.M.; Łapkowski, Mieczysław

doi:10.1016/0013-4686(87)80039-7

Cited by 17 publications

(7 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This finding also corroborates the results obtained by FTIR spectroscopy, which showed that poly(PNA) has some characteristic vibration bands of poly(1,4-naphthylene) (vide infra). Moreover, the type of coupling proposed here is in agreement with the residís of Lapkowski et al 36 They showed that 1-naphthylamine cannot form a polymer and observed that the oxidation of the monomer led to the formation of 1-naphthidine, which is the result of naphthyl groups coupling at the 1 position. 36 The structures of poly(PNA) and poly(1,4-naphthylene) are shown in Figures 10B and 10C, respectively.…”

Section: Discussionsupporting

confidence: 90%

Synthesis and characterization of poly(diarylamines): a new class of electrochromic conducting polymers

Guay¹,

Paynter²,

Dao³

1990

Macromolecules

109

View full text Add to dashboard Cite

The electropolymerization of diphenylamine and JV-phenyl-l-naphthylamine leads to the formation of poly(diphenylamine) (poly(DPA)) and polyf/V-phenyl-l-naphthylamine) (poly(PNA)), respectively, with the incorporation of the aryl groups into the polymer backbone. The polymer films were characterized by cyclic voltammetry, spectroelectrochemistry, FTIR, and XPS. Poly(DPA) shows two reversible, stable electrochemical processes in its voltammogram, while poly(PNA) displays only one set of redox peaks. These two polymers exhibit very interesting optical properties; poly(DPA) films reversibly change color from pale yellow to yellow to green to blue when the potential (vs Ag/AgCl) is swept from 0.0 to 1.2 V, and poly-(PNA) films change from pale yellow to red to blue between 0.0 and 0.8 V vs Ag/AgCl. XPS, spectroelectrochemistry, and FTIR measurements indicated the presence of polarons and bipolarons. Electrical conductivities of 2 -1 cm-1 and doping levels as high as 53% were obtained for poly(DPA). Poly(PNA) shows a lower conductivity (10~3 ™1 cm-1) and a lower doping level (30%).

show abstract

Section: Discussionsupporting

confidence: 90%

Synthesis and characterization of poly(diarylamines): a new class of electrochromic conducting polymers

Guay¹,

Paynter²,

Dao³

1990

Macromolecules

109

View full text Add to dashboard Cite

show abstract

“…Oxidation of reduced polyaniline to cation radical (polaron) occurs at this potential range in an LiClO4/acetonitrile electrolyte solution. 42 as a function of potential cycles. Polyaniline loading in both electrodes is about the same based on the area under the CV curve.…”

Section: Methodsmentioning

confidence: 99%

Large‐Area Electrochromic Coatings: Composites of Polyaniline and Polyacrylate‐Silica Hybrid Sol‐Gel Materials

Jang

Chen

Gumbs

et al. 1996

J. Electrochem. Soc.

View full text Add to dashboard Cite

A low-cost technique for fabricating large-area electrochromic coatings is described. Polyaniline was incorporated into polyacrylate-silica hybrid sol-gel networks using suspended particles or solutions. A solution of polyaniline and poly[methyl methacrylate-co-3-(trimethoxysilyl)propyl methacrylatel can be spray-or brush-coated on transparent indium-tin oxide substrates to form robust electrochromic coatings. Silane functional groups on the polyacrylate chain act as coupling and cross-linking agents to improve surface adhesion and mechanical properties of the resulting composite coatings. These coatings showed reversible transparent to green color change when polarized at potentials between -0.4 and +0.4 V vs. Ag/AgCl in a 0.2 M LiC1O4/acetonitrile electrolyte solution. The cycle lifetimes of polyaniline films were improved by incorporating the polymer in the polyacrylate-silica matrix. Electrochromic switching was demonstrated for the composite coatings in large-area all-solid-state devices. CF43 -CH2---C--H20.-ROK COO(C)3S(OH)3 CH3 CH_ 0 C00(CH2)1 -S-O--Si-0-) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 134.129.120.3 Downloaded on 2015-06-08 to IP ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 134.129.120.3 Downloaded on 2015-06-08 to IP

show abstract

“…The coated Pt wire was then transferred with thorough rinsing in an electrochemical cell containing a 50: 50 CH3CN/H20 0.1 mol 1-1 CF,SO; K + solution and located in the cavity of the FPR spectrometer. This cell has been previously described [5].…”

Section: In Situ Epr Electrochemical Experimentsmentioning

confidence: 99%

Conductive polymers with immobilised dopants: ionomer composites and auto-doped polymers-a review and recent advances

Bidan

Ehui

Łapkowski

1988

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

The electrodeposition of poly(pyrrole) in the presence of a polyanionic electrolyte (poly(styrenesulphonate), poly(vinylsulphate) or Nafion) leads to the formation of a film of a composite polymer at the surface of the two polymeric structures prevents the anionic dopants from being expelled during the dedoping, consequently cations are inserted. This cation-exchange behaviour is the origin of applications in the field of charge-controllable membranes such as water deionisation and the polymer battery, reported by Shimidzu and co-workers (1987). The immobilisation of the anionic dopant has also been achieved by their direct covalent binding to the conductive polymer backbone, leading to the concept of internal doping or 'auto-doping'. The poly(3-alkylsulphonate-thiophenes) (1987) reported by Wudl, Heeger and co-workers (187) are revealed to be the first water-soluble conductive polymers. A study of the poly(3-methylpyrrole-4-carboxylic acid) by Pickup (1987) shows that the formal potential of this polymer is sensitive to pH. The copoly(pyrrole+N-alkylsulphonate-pyrrole) presented by the authors in more detail exhibits a remarkable mixed behaviour as a result of the coupling of cationic membrane with conductive polymer properties. In particular, the electrochemical behaviour of this co-polymer is very sensitive to the water content of the solvent.

show abstract

Electrochemical oxidation of naphthylamine in NH4 F, 2.3 HF medium

Cited by 17 publications

References 15 publications

Synthesis and characterization of poly(diarylamines): a new class of electrochromic conducting polymers

Synthesis and characterization of poly(diarylamines): a new class of electrochromic conducting polymers

Large‐Area Electrochromic Coatings: Composites of Polyaniline and Polyacrylate‐Silica Hybrid Sol‐Gel Materials

Conductive polymers with immobilised dopants: ionomer composites and auto-doped polymers-a review and recent advances

Contact Info

Product

Resources

About