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Hoffmann, Alexander; Bienemann, Olga; Vieira, Ines dos Santos; Herres-Pawlis, Sonja (April 2014): New Guanidine-Pyridine Copper Complexes and Their Application in ATRP. In: Polymers, Vol. 6, No. 4: pp. 995-1007


The guanidine hybrid ligands, (tetramethylguanidine)methylenepyridine (TMGpy) and (dimethylethyleneguanidine)methylenepyridine (DMEGpy), were proven to be able to stabilize copper complexes active in the solvent-free polymerization of styrene at 110 degrees C using 1-phenylethylbromide as the initiator. The polymerization proceeded after first-order kinetics, and polystyrenes with polydispersities around 1.2 could be obtained. Using the ligand, DMEGpy, three new copper guanidine-pyridine complexes could be synthesized and structurally characterized. Their structural characteristics are discussed.