2.6. Copolymerization of 5-phenyl-2-norbornene and 5-docecyl-2-norbornene (Addition Polymerization)

The copolymer was synthesized by a procedure similar to that described above with the same ratio of catalyst and monomers. The procedure was repeated twice with a molar ration of 5-phenyl-2-norbornene to 5-docecyl-2-norbornene 10/1.3 (total mass 2.05 g) and 10/2.6 (total mass 2.20 g). The reaction mixture was stirred for 5 h instead of 20 h and was diluted 4.5 times. Yield: 0.86 (42%), Mw = 1.17 × 10⁶, Mw/Mn = 1.69, monomer ratio 27/73 (Dodecyl/Ph); 0.77 g (35%), Mw = 2.88 × 10⁶, Mw/Mn = 2.51 monomer ratio 1/1 (Dodecyl/Ph).

¹H NMR (δ, ppm, CDCl₃): 8.07–6.20 (m., Ar−H), 3.34–0.57 (m., aliphatic).