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In this paper, we report two simple and effective bromination methods to brominate the cyclo olefin copolymer (COC). A suitable metallic catalyst can accomplish functionalization and chromophorization of the brominated COC. A 2nd NLO dye, Disperse Orange 3(DO3) containing the –NH2 functional group, has been grafted onto either the norbornene unit or the PE segment of the COC backbone successfully,...
In this paper, we report the monomer reactivity on the copolymerization of norbornene and ethylene. The reactivity ratios for ethylene (M1) and norbornene (M2) are 18.5 and 0.035, respectively. Different copolymerization conditions can produce COC with different microstructures. A 13C NMR shift assignment in pentad sequences in copolymers has been obtained. More isolated polynorbornene or a micro-block...
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