FLUORESCENT EXCIPLEXES FORMED BETWEEN 9-CYANOANTHRACENE DERIVATIVES AND N,N-DIMETHYLANILINE IN THE GAS-PHASE

Vapour-phase exciplex emission has been observed from 9-cyano-10-ethylanthracene, 9-cyano-10-phenylanthracene and 9,10-dicyanoanthracene, each in the presence of N,N-dimethylaniline, with emission maxima at 500, 503 and 592 nm respectively. The monomer emission decays biexponentially, the long-lived components giving lifetimes which are similar to those of the exciplexes (15-30 ns). The effect of temperature on exciplex intensity and lifetime is also reported briefly. © 1979.