Conducting polymers containing either aromatic

The purpose of this paper is therefore to present Resonance Raman Scattoing (RRS) data obtained on a variety of conducting polymers containing either aromatic or heteroaromatic rings and especially to precise what can be gained from an analysis of the vibrational spectra in terms of electronic stractures. 

More recently, Tigelaar et al. have developed an alternative polymer membrane to Nafion that contains rigid sulfonated aromatic backbones linked with diamine-terminated poly-(ethylene oxide) (PEO) oligomers. This polymer was developed to increase the amount of ionic liquid in the membrane, where in Nafion, the perfiuorinated nature was thought to be reducing the uptake. The polymer membranes were soaked with a 1 1 mixture of a PIL and water, where the PILs trialed contained the imidazolium cation with either sulfate, triflate, or TFSI anions. The highest conductivity obtained with these polymer membranes was 50 mS/cm at 150 °C with imidazolium—CF3SO3H. ... 

Quantitative studies of the hydrodynamic characteristics were conducted in [100-103] for the polymers and copolymers listed in Table 3.10, and only copolymers of 3 are soluble in tetrachloroethane [100], while alkylene aromatic polyethers are soluble in dichloroacetic and trifluoroacetic acids [101-103]. The use of acids with a high viscosity and density as solvents limits the possibilities of the sedimentation method. For this reason, for polydecamethylene-tere-phthaloyl di-p-hydroxybenzoate (P-IO-MTOC, polymer 1) and the totally aromatic polyether (PE) containing aromatic rings in the meta and para positions (polymer 2), the molecular weights of the fractions and samples were either determined with the Svedberg equation using sedimentation-diffusion data... 

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