Poly(0-ethoxyaniline): Control of structure and charge transport through derivatization

Pouget, J. P.; Zhao, S.; Wang, Z.H.; Oblakowski, Z.; Epstein, A.J.; Manobar, S.K.; Wiesinger, J.M.; MacDiarmid, Alan G.; Hsu, Chien‐Ning

doi:10.1016/0379-6779(93)90955-v

Cited by 14 publications

(4 citation statements)

References 12 publications

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“…This has allowed films to be obtained with various substituted polyanilines, e.g. poly(omethoxyaniline) (POMA) [5,6] and poly(o-ethoxyaniline) (POEA) [7,8]. The degree of protonation and the conductivity vary within the PANI class, which is attributed to differences in conformation of the polymer chains and packing in a film.…”

Section: Introductionmentioning

confidence: 99%

TEM, XRD and AFM study of poly(o-ethoxyaniline) films: new evidence for the formation of conducting islands

et al. 2008

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The existence of conducting islands in polyaniline films has long been proposed in the literature, which would be consistent with conducting mechanisms based on hopping. Obtaining direct evidence of conducting islands, however, is not straightforward. In this paper, conducting islands were visualized in poly(o-ethoxyaniline) (POEA) films prepared at low pH, using Transmission Electron Microscopy (TEM) and atomic force spectroscopy (AFS). The size of the islands varied between 67 and 470 Å for a pH = 3.0, with a larger average being obtained with AFS, probably due to the finite size effect of the atomic force microscopy tip. In AFS, the conducting islands were denoted by regions with repulsive forces due to the double-layer forces. On the basis of X-ray diffraction (XRD) patterns for POEA in the powder form, we infer that the conducting islands are crystalline, and therefore a POEA film is believed to consist of conducting islands dispersed in an insulating, amorphous matrix. From conductivity measurements we inferred the charge transport to be governed by a typical quasione dimensional variable range hopping (VRH) mechanism.

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Section: Introductionmentioning

confidence: 99%

TEM, XRD and AFM study of poly(o-ethoxyaniline) films: new evidence for the formation of conducting islands

et al. 2008

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“…Substituted polyanilines, i.e. poly(ortho-toluidine) (POT), poly(methoxy anilines) (POAS), poly(ethoxy anilines) (PEOA) and poly(methyl anilines) etc were synthesized bearing in mind the unusual electroactive properties and improved processibility [11,12]. The substituted polyanilines increased the possibilities of the adoption of several techniques to the assembly of such a class of conducting polymers from thick to ultrathin films, which could be appropriate for application in various technologies comprising electronic and optical devices [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Langmuir-Schaefer films of a poly(o-anisidine) conducting polymer for sensors and displays

Paddeu

Ram²,

Carrara

et al. 1998

Nanotechnology

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Langmuir-Schaefer (LS) films of poly(o-anisidine) (POAS) were fabricated and characterized by means of Brewster-angle microscopy, ellipsometry and electrochemical techniques. The studied optical, cyclic voltammetric and ellipsometric properties of films underlined a regular deposition up to at least 40 monolayers of POAS conducting polymer. The development of surface irregularities beyond 40 monolayers in LS films showed an electrochemical kinetic similar to electrodeposited films. More importantly, the electrochemical kinetic in a small number of monolayers was indicative of the fast transfer process of the electrons. The nature of anions caused meaningful changes in the redox properties of POAS LS films. The electrochromic switching response time and diffusion coefficient of the LS films were estimated through electrochemical surveying. Later, POAS LS films were used as a sensing element for a survey of 0.1 ppm of acid in water through conductimetric measurement.

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“…In addition, the ideal emission bandwidth should be narrow and have an emission wavelength within 435-480 nm. In an ideal case, the polymers should have minimal percentage of sp 3 components that may significantly reduce the charge mobility in the matrix [33].…”

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confidence: 99%

Synthesis and characterization of poly(2,2′-diphenylbiphenyl-4,4′-ylenevinylene-2″,5″-bis(trimethylsilyl)-para-phenylenevinylene), a new efficient blue-light emitting polymer

Yang

Chen

Yang

et al. 2001

Materials Science and Engineering: B

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Poly(0-ethoxyaniline): Control of structure and charge transport through derivatization

Cited by 14 publications

References 12 publications

TEM, XRD and AFM study of poly(o-ethoxyaniline) films: new evidence for the formation of conducting islands

TEM, XRD and AFM study of poly(o-ethoxyaniline) films: new evidence for the formation of conducting islands

Langmuir-Schaefer films of a poly(o-anisidine) conducting polymer for sensors and displays

Synthesis and characterization of poly(2,2′-diphenylbiphenyl-4,4′-ylenevinylene-2″,5″-bis(trimethylsilyl)-para-phenylenevinylene), a new efficient blue-light emitting polymer

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