Japanese scientists have synthesised a molecule (1,3,6,8-tetramethylpyrene; TMPY) with a similar shape to the luminescent material perylene. The team grew co-crystals with perylene and demonstrated effective energy transfer with a luminescence efficiency of 78%. This host–guest system is a good method to fabricate the light-emitting field effect transistor devices, and to investigate organic semiconductor laser performance the team say.
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