Polymeric compounds, electroluminescent device and a light-emitting device

The novel polymeric compound which emits light by the electric field is represented by the general formula (I). A is represented by (a-1) or the like, B or B 'is one of the following (b-1) or (b-2). General formula (I) a high molecular compound represented by is capable of film formation by electrolytic polymerization method, by changing a substituent group, the emission color varies by the electric field. Therefore, it is possible to easily obtain a multi-color display can be a light-emitting device.