  Tuning the chain-end functionality of a short-chain cationic homopolymer,
owing to the nature of the initiator used in the ATRP polymerisation step, can
be used to mediate the formation of a gel of this poly(electrolyte) in water.
While a neutral end group gives a solution of low viscosity, a highly
homogeneous gel is obtained with a phosphonate anionic moiety, as characterized
by rheometry and diffusion NMR. This novel type of supramolecular control over
poly(electrolytic) gel formation could find potential use in a variety of
applications in the field of electroactive materials.
