A luminescent sensory material for the detection of the presence of organo-halogen
compounds is described. This material is based on a platinum chromophore functionalized
with pyridylacetylide ligands, as shown in Formulae I and II below. These complexes
exhibit positive luminescence upon exposure to the vapors of organ-halogen compounds
like CH2Cl2 or CHCl3 with high selectivity over
non-chlorinated common organic vapors. Direct relationships between vapor concentration
and luminescence intensity are established using thin films prepared from these
complexes.
##STR1##