| abstract |
Disclosed is an opto-electroactive device comprising a metallocene of the formula n n nwherein M is zirconium or hafnium; X is halogen and R 1 -R 5 are each independently hydrogen, aryl, alkyl, halogen or —Si(R 6 ) 3 ; or wherein at least two adjacent R substituents on at least one ring are joined to form a fused ring, which may be unsubstituted or substituted with aryl, alkyl, halogen or —Si(R 6 ) 3 ; or wherein the R 1 substituents on each ring are joined to link the rings in an ansa bridge, and wherein R 6 is an alkyl group, a substituted alkyl group, an aryl group or a substituted aryl group. Also disclosed is a method for making an opto-electroactive device comprising a metallocene. |