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Studies of Photoreactive Poly(Norbornene Derivatives) Bearing Chalcone Units

New photoreactive poly(norbornene derivatives) containing photocrosslinkable pendant units have been prepared via ring opening metathesis polymerization (ROMP) for the first time. The photochemical behavior of these polymers was investigated in dilute solutions. The rates of photocrosslinking were determined under the influence of different factors such as the backbone structure of the polymer, the substituents on the aromatic ring of the photocrosslinkable units, temperature, concentrations of the photocrosslinkable units in the solution, and the solvent. The studies confirmed that all the prepared polymers have higher UV radiation sensitivity in very dilute solutions in different solvents, and at different temperatures.