STEREOSPECIFIC POLYMERIZATION AND CHIRAL INITIATION, CHIRAL CRYSTALLIZATION AND CHIRAL NUCLEATION

Helical macromolecules which are configurationally and conformationall y specific can now be synthesized. Monomer structures must be selected that demand spacial restriction for monomer addition. High specificit y of monomer addition during polymerization has parallels in crystalli zation of some inorganic salts from aqueous solution. Initiation of hi ghly specific polymerizations with chiral initiators give helical poly mers with substantial one-handedness. Nucleation of certain inorganic salts with chiral nucleating agents, the enantiomers of the salts prod uce enantiomerically pure chiral salts.