Synthesis and properties of chemically coupled poly(thiophene)

doi:10.1016/0379-6779(84)90044-4

Synthetic Metals

Volume 9, Issue 1, January–March 1984, Pages 77-86

https://doi.org/10.1016/0379-6779(84)90044-4 Get rights and content

Abstract

We describe the synthesis and physical properties of poly(thiophene) with a molecular weight of approximately 4000 consisting of 46 – 47 thiophene rings (184 – 188 carbons along the backbone). The pristine polymer exhibits an ESR line similar to that of cis-(CH)_x; the small number of unpaired spins is consistent with relatively high-quality material. The electrical conductivity can be increased by nearly ten orders of magnitude to values in excess of $10 Ω^{−1} cm^{−1}$ upon partial oxidation by AsF₅. The magnitude and temperature dependence of the thermopower of the doped polymer (24 mol%) are consistent with metallic behavior. The decrease in conductivity as the temperature is lowered and the magnitude of π at room temperature apparently result from the macroscopic transport being limited by interparticle contacts.

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Citation Excerpt :
The Fig. 6 displays that valance band maximum (VBM) of FTTF is originated on point G in BZ, while the conduction band minimum (CBM) is originated on point X in BZ, illuminating the indirect band-gap nature of FTTF with 1.765 eV band gap from G to X symmetrical points. The experimental valued of bandgap for polythiophene has been reported as 2.0 eV [40]. The computed bandgap of FTTF is less than polythiophene revealing that the FTTF might be better materials for conduction layer in semiconductor devices than the aforementioned polythiophene.
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Synthesis and properties of chemically coupled poly(thiophene)

Abstract

J. Polym. Sci., Polym. Chem. Edn.

Zh. Ebsp. Teor. Fiz Pisma Red.

JETP Lett.

Comments on Solid State Physics

Phys. Rev. B

Phys. Rev. B

Mol. Cryst. Liq. Cryst.

Polym. Prepr., Am. Chem. Soc. Div. Polym. Chem.

Chem. Scripta

J. Electroanal. Chem.

J. Polym. Sci., Polym. Lett.