Enantiotopic interactions in the fluorescence quenching of camphor by chiral amines

A study of the quenching of fluorescence of (+)- and (?) camphor in hexane by a series of chiral primary, secondary, and tertiary amines shows only very small differences in quenching rate constants for the two enantiomers. The collision complex which precedes quenching (probably charge transfer) is thus insufficiently tight for enantiomeric recognition.