Size-dependent fluorescence of dibenzoylmethanate and ditoluylmethanate of boron difluoride

Significant differences in the luminescence properties of dibenzoylmethanate and ditoluylmethanate of boron difluoride bulk crystals and microcrystals were detected. The size-dependent blue-to-green colour change of the luminescence is connected with the band intensity redistribution of monomer and excimer luminescence and fluorescence due to interdimer interaction. Copyright (C) 2007 John Wiley & Sons, Ltd.