Soluble ES3+ complexes with 2,2 ' -Bipyridine, 1,10-Phenantroline, 2-dithie
nyl-2,2 ' -bipyridazine ligands, embedded in thin films of poly(methyl-meth
acrylate) (PMMA) as well as in films of a conjugated polymer, poly[2-methox
y, 5-(3 ' ,7 ' -dimethyl-octyloxy)]-p-phenylene vinylene (MDMO-PPV), were s
tudied by luminescence spectroscopy. The characteristic Er3+ emission at si
milar to1.55 mum is clearly observed in mum thick polymer films for two of
the complexes.