each of Y is independently chosen from the group of —OR, —NR, —NR2, —CR, —{TAIL ~ C}—NR2, —C—OR, —CR, —C—NR2, —C—OR, and R, wherein each R is independently H, or {HEAD ~ a substituted or unsubstituted, branched, cyclic or straight alkyl}, alkenyl or alkynyl group which possibly contains an aromatic, ester or ether moiety or one or more other heteroatoms and may have from 1 to 40 carbon atoms 