2,2'-Bipyridine → Carbazole

Participants

Reaction Conditions

Reaction Steps

To an ampoule, Cu(I)Br (1 mmol), 2,2′-bipyridine (1 mmol), norbornene methylene bromide (NBMBr)(1 mmol) and styrene (St) (100 mmol) were added in 10 mL toluene. The heterogeneous mixture was placed under vacuum and degassed via a freeze-pump-thaw cycle thrice. After degassing, the reaction mixture in ampoule was stirred at 100° C. for 12 hrs. The macromonomer containing polystyrene segments (NBMPStBr) was precipitated from methanol. Polymer was dissolved in THF and reprecipitated from methanol three times. Number average molecular weight of (NBMPStBr) is 160000 and PDI is 1.28(by GPC).

Provenance & Evidence