On the interrelation between microstructure and physicochemical properties of some polyconjugate systems

Abstract

Soluble oligoarylenes based on naphthalene and anthracene, and fractions of different molecular weights have been studied by electron microscopy. For the examined samples, a definite interrelation is ascertained between microstructure and physicochemical properties, such as density, x‐ray parameters, heat of solution, electron paramagnetic resonance (EPR) spectra, and dark conductivity. The molecular‐weight distribution of oligoarylenes is shown to decisively influence the degree of packing of macromolecules and their physicochemical properties. This allows interpretation of some anomalous properties of oligoarylenes in comparison with the first members of the corresponding homologous series.

Reaction Capacity and Chemical Conversion of Carbo-Oligoarylenes

“…The polymerhomology of the fractions studied was confirmed by UV and IR spectral data, as was done in work (ref. 48), and also by the uniform nature of the graph of T p against M n . In addition, according to GPC data, all the fractions studied were extremely homogeneous in composition and similar to one another.…”