Cu-catalysed oxidative C–H/C–H coupling polymerisation of benzodiimidazoles: an efficient approach to regioregular polybenzodiimidazoles for blue-emitting materials

The Cu-catalysed oxidative C–H/C–H coupling reaction of azoles has been used for the first time to develop polymerisation. The resulting polybenzodiimidazoles exhibit high molecular weights, regioregularity.