[EN] AMINO ANTIPYRINE BASED AZO LIGANDS AND THEIR METAL COMPLEXES FOR USE AS OPTICAL RECORDING MEDIA [FR] LIGANDS AZO A BASE D'AMINOANTIPYRINE ET COMPLEXES METALLIQUES ASSOCIES UTILISES DANS DES SUPPORTS D'ENREGISTREMENT OPTIQUES
[EN] AMINO ANTIPYRINE BASED AZO LIGANDS AND THEIR METAL COMPLEXES FOR USE AS OPTICAL RECORDING MEDIA [FR] LIGANDS AZO A BASE D'AMINOANTIPYRINE ET COMPLEXES METALLIQUES ASSOCIES UTILISES DANS DES SUPPORTS D'ENREGISTREMENT OPTIQUES