Anthracene and Anthracene-Tetracene Crystals from Vapor

Molecular crystals in general are receiving increased attention and anthracene crystals in particular are in demand for use in various studies. Consequently, several techniques have been developed for growing anthracene crystals–most of which have involved growth from the melt.1–3 In those common method is to use a cooled collector plate.3,4 The principal disadvantage of the latter method is the limited thickness of the crystal that can be obtained, owing to the low thermal conductivity of anthracene. In connection with our various studies of the interaction of energy with anthracene it is often necessary to be able to grow large and uniformly doped crystals. The techniques referred to above are not suited to the task. A procedure for growing relatively large anthracene crystals with tetracene uniformly distributed throughout is reported here.