Low-temperature delayed fluorescence in 1,4-dibromonaphthalene.
The occurrence of low-temp. triplet-triplet annihilation in 1,4-dibromonaphthalene is strongly correlated with the presence of mols. of the isomer 1,5-dibromonaphthalene. The main part of the delayed fluorescence originates from this guest mol. The crystal structure of 1,5-dibromonaphthalene has been detd.
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