Crystal perfection and triplet excitons in 1,4-dibromonaphthalene.
In: Chemical Physics Letters, Jg. 92 (1982) ; Nr. 5, S. 519-522
Zeitschriftenaufsatz / Fach: Chemie
The phosphorescent behavior of 1,4-dibromonaphthalene single crystals at liq.-He temps. is strongly influenced by the crystal prepn. techniques. Crystal imperfections appear to be essential for observing excitonic emission. A comparison is made between crystals grown from the melt, soln. and vapor. Expts. on crystals doped with DBN-d6 confirm the proposed model.