Correlation between vibrational spectra and electrical conductivity of polythiophene

Akimoto, M; Furukawa, Yukio; Takeuchi, Hideo; Harada, Issei; Soma, Yuko; Soma, Mitsuyuki

doi:10.1016/0379-6779(86)90084-6

Cited by 161 publications

(104 citation statements)

References 12 publications

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“…Furthermore, Akimoto et al 41 observed similar characteristics in polythiophene. A correlation between conjugation length and the relative intensity of the peaks at 1440 cm ¹1 was found.…”

Section: ¹1supporting

confidence: 53%

Electro-synthesis and Characterization of Polymer Nanostructures from Terthiophene Using Silica Mesoporous Films as Template

et al. 2014

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Nanostructures of poly(2,2′:5′,2′′-terthiophene) have been synthesized using only electrochemical techniques. To this end, a porous silica film modified platinum disc was used as working electrode (Pt|(SiO 2 ) n ). The silica coating acts as a template so that the subsequent electro-polymerization occurs in their confined space pores, perpendicular to the electrodic surface. The current response of the obtained polymeric deposit is much greater than that exhibited by the solid massive polymer (generated under identical conditions but without template), accounting for the significant increase of the p-doping/undoping charge. Template removal was accomplished by treating the deposits with HF solutions. It was demonstrated that as the template is removed, the charge of the nanostructured electrodes increases even more. Electro-deposit characterization was supplemented using transmission electron microscopy, TEM, and FT-Raman spectroscopy, which revealed the obtaining of electrodes modified with polymeric nanostructures vertically aligned upon the electrode surface. Thus, a methodology employing solely electrochemical techniques that enables the obtainment of polymeric nanodeposits directly on the electrode surface was proposed. This approach allows foreseeing a significant progress in applications wherein these materials are useful, since this methodology, first tested for polythiophene, is applicable to various starting units capable of being electro-synthesized.

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“…Furthermore, Akimoto et al 41 observed similar characteristics in polythiophene. A correlation between conjugation length and the relative intensity of the peaks at 1440 cm ¹1 was found.…”

Section: ¹1supporting

confidence: 53%

Electro-synthesis and Characterization of Polymer Nanostructures from Terthiophene Using Silica Mesoporous Films as Template

et al. 2014

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“…[48][49][50] On the other hand, the peaks at 830-825 and 730 cm À1 of a, b coupling (i.e. 2,4-polythiophene) 46,47 are not present.…”

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confidence: 82%

Synthesis and characterization of electrically conducting copolymers based on biphenyl and thiophene

Simitzis

Triantou

Soulis

2010

J of Applied Polymer Sci

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New electrically conducting copolymers based on biphenyl and thiophene in a form of film were synthesized by electropolymerization using potentiostatic conditions and the corresponding homopolymers, polyphenylenes, and polythiophenes, for comparison reasons. Different values of applied potential were used, to study its effect on the structure, morphology, and electrical conductivity of the films. From the analysis of the current-time curves, it was found that the growth of the films follows layer by layer (2D) mechanism. The films were studied by FTIR, TGA, XRD, SEM-EDAX and their electrical conductivity was determined, as well as their energy gap (E g ) by cyclic voltammetry. The copolymers had higher conductivity (appr. 1 S/cm) and lower E g (appr. 1.2 eV) than that of the corresponding homopolymers. These materials due to their high conductivity, high stability under repetitive potential cycling, and partial solubility are candidates for electronic applications.

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“…20 Notably for both 3o and 4o the characteristic C-H oop bending of the terminal thiophene C-H, at 690 cm -1 , 21 is absent in the R,R′-dimerization products 1oo and 2oo. The absorption band at 790 cm -1 in the spectra of 1oo and 2oo is characteristic of a sexithiophene.…”

mentioning

confidence: 99%

Photoswitchable Sexithiophene-Based Molecular Wires

et al. 2009

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Correlation between vibrational spectra and electrical conductivity of polythiophene

Cited by 161 publications

References 12 publications

Electro-synthesis and Characterization of Polymer Nanostructures from Terthiophene Using Silica Mesoporous Films as Template

Electro-synthesis and Characterization of Polymer Nanostructures from Terthiophene Using Silica Mesoporous Films as Template

Synthesis and characterization of electrically conducting copolymers based on biphenyl and thiophene

Photoswitchable Sexithiophene-Based Molecular Wires

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