HYDROGEN-BONDING AS THE ORIGIN OF BOTH LIQUID CRYSTALLINITY AND POLYMER FORMATION IN SOME SUPRAMOLECULAR MATERIALS

The use of lateral substitution on the aromatic rings of the diacid co mponent of diacid/bispyridyl AABB supramolecular LC polymers is effect ive at retarding crystallization presumably by introducing a 'carbuncl e' along the chain which interferes with the requisite efficient close packing of molecular units. We have examined both one and two chloro groups per ring and have observed a glass transition and fiber formati on in the least crystalline complex.