Effect of Aromatic and Aliphatic Hydrocarbons on the Spectral and Luminescent Properties of Composites Derived from a Zinc-Containing Coordination Polymer and Dyes

摘要

New composite materials derived from a porous luminescent zinc-containing coordination polymer and organic dyes, namely, 5-(4-diethylamino)benzylidene)pyrimidine-2,4,6(1H,3H,5H)-trione (KR) and methylene blue (MB) have been prepared. Upon excitation of the polymer matrix, the composite with KR was shown to display dual luminescence attributed to energy transfer between the luminophores, while there is no such transfer in the composite with MB. The ratio of the emission intensities of the inorganic and organic constituents of the composite films in liquid hydrocarbons was shown to depend on the hydrocarbon structure. Nitrobenzene vapor selectively quenches the luminescence of the coordination polymer in these composites, which suggests that the dye can be used as an internal standard in luminescent analytical measurements.