Non Linear Optics in Zirconium Phosphate Layered Phases

Abstract
The stilbazolium chromophore 4-[4-(dimethylamino)-α-styryl]-1-methylpyridinium (DAMS) ion can be exchanged with the α and γ forms of 7, irconium phosphate to give single phase materials of interlayer distance 16.5 and 16.4 Å respectively. The latter has a second harmonic generation efficiency, measured at 1.9 μm, equal to that of urea, whilst the former is inactive. Both compounds have been characterised by fluorescence emission and visible spectroscopies.