Unravelling the detailed microstructure of a semiconducting (quasi‐metal) soluble polymer incorporating conjugated thienylene methine sequences

Abstract

This article reports a thorough spectroscopic characterization and the complete microstructural unravelling of a novel soluble poly(thienylene methylene) recently obtained by a straightforward process based on the methanesulfonic acidcatalyzed self-condensation of 2-acetoxymethyl-3,4-dimethylthiophene. These macromolecules were found to generate both in situ (in the acidic reaction medium) and ex situ (by the addition of appropriate dopants) conjugated sequences consisting of alternating aromatic-and quinoid-like thiophene rings, that is, conjugated thienylene methine sequences. The effect of different types of dopants on the electronic features of these polymers was assessed by the extent of bathochromic shifts they induced in the macromolecule UV-vis spectra. Doped films obtained by solution casting were characterized

Sulphur-doped porous carbon from a thiophene-based twin monomer

“…The two signals at 71 ppm and 40 ppm were assigned to incompletely converted monomer species (71 ppm) and small amounts of catalyst (40 ppm). 17 In contrast to the analogous twin polymerization of the furfuryl-based twin monomer, tetrafurfuryloxysilan, 13 the polymer produced from 1 did not show a marked tendency to form networks. These findings agree with the studies by Gandini et al, who compared the cationic polymerization of furfuryl monomers with those of 2-hydroxymethylthiophene monomers.…”