Loi Do loido@uh.edu Technologies: NICKEL CATALYSTS WITH TWO ALKALI IONS FOR HOMOPOLYMERIZATION AND COPOLYMERIZATION NICKEL CATALYSTS WITH SINGLE METAL CATIONS FOR HOMOPOLYMERIZATION AND COPOLYMERIZATION NICKEL CATALYSTS WITH SINGLE ALKALI IONS FOR HOMOPOLYMERIZATION AND COPOLYMERIZATION NICKEL CATALYSTS WITH SINGLE ALKALI IONS FOR HOMOPOLYMERIZATION AND COPOLYMERIZATION NICKEL CATALYSTS WITH TWO METAL CATIONS FOR HOMOPOLYMERIZATION AND COPOLYMERIZATION HETEROBIMETALLIC CATALYSTS AND SITE-DIFFERENTIATED LIGANDS FOR PREPARATION THEREOF