POLYCATIONS - 4 - SYNTHESIS AND ANTIHYDROPHOBIC EFFECT OF POLYCATIONIC STRINGS

Two categories of polycationic ''strings'' have been synthesized and i nvestigated for their effect on the aqueous solubility of hydrophobic organic compounds (benzene and 4-bromotoluene, the latter discussed he re). Polycationic ''strings'' are compounds in which cationic sites (q uaternary ammonium sites) are incorporated into the covalent structure along a linear chain with free-floating associated anions. The catego ries are: I) defined length chains consisting of quaternized dabco uni ts connected by intervening lengths of methylene groups, terminating w ith omega-alkanol units, and 2) alpha,omega-dimethylaminoalkane units quaternized with chain extending omega-alkanol units. The observed ant ihydrophobic effect depends on the total charge, the length of the cha rge-intervening linkages, and the terminating groups. (C) 1998 Elsevie r Science Ltd. All rights reserved.