We describe a systematic study of a series of eight blue light-emitting molecules which can be prepared in one step from inexpensive commercial starting materials. The relative luminescence quantum yield can be as high as 84% and the heterocycles are luminescent in the condensed state, either as solids or as oils, indicating that there is no self-quenching in this system. The last observation augurs well for these heterocycles being useful in the fabrication of deep blue light-emitting devices.
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