NITROGEN-BASED POLYELECTROLYTES - SYNTHESIS AND SOLVATION BEHAVIOR

This investigation relates to the synthesis and characterization of fo ur linear polyelectrolytes containing crystal violet and bipyridinium moieties in the main chain, with molecular weights ranging from 1154 t o 3815. Of these, two polyelectrolytes had N-alkylammonium ions and th e other two involved typical 2,5-diacylthiophenylene linkages with N-a cylammonium and N-acyliminium ions in their respective structures. The solvation characteristics of these systems are explored through densi ty measurements in dimethylformamide and dimethylsulfoxide solvents ov er the small temperature range 25 +/- 5-degrees-C, by analysing the co ncentration dependence of apparent molar volume data at various temper atures in terms of the competing solvophobic and electrostrictional in teractions with the media.