Abstract:
One embodiment of the present invention is a compound represented by the Structural Formula (I): Y is a covalent bond of a substituted or unsubstituted straight chained hydrocarbyl group. In addition, Y, taken together with both C Z groups to which it is bonded, is a substituted or unsubstituted aromatic group. Preferably, Y is a covalent bond or âC(R R )â. R is an aliphatic group, a substituted aliphatic group, a non-aromatic heterocyclic group, or a substituted non-aromatic heterocyclic group, R -R are independently âH, an aliphatic group, a substituted aliphatic group, a non-aromatic heterocyclic group, a substituted non-aromatic heterocyclic group, an aryl group or a substituted aryl group, or R and R taken together with the carbon and nitrogen atoms to which they are bonded, and/or R and R taken together with the carbon and nitrogen atoms to which they are bonded, form a non-aromatic heterocyclic ring optionally fused to an aromatic ring. R -R are independently âH, an aliphatic group, a substituted aliphatic group, an aryl group or a substituted aryl group. R and R are each independently âH, an aliphatic or substituted aliphatic group, or R is âH and R is a substituted or unsubstituted aryl group, or, R and R , taken together, are a C2-C6 substituted or unsubstituted alkylene group.