Novel erbium(III) complexes with 2,6-dimethyl-3,5-heptanedione and different N,N-donor ligands for ormosil and PMMA matrices doping

作者: P Martín-Ramos , V Lavín , M Ramos Silva , IR Martín , F Lahoz

DOI: 10.1039/C3TC30686K

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摘要: Three novel complexes, [Er(dmh)3(bipy)], [Er(dmh)3bath] and [Er(dmh)3(5NO2phen)], with 2,6-dimethyl-3,5-heptanedione (Hdmh) as the main sensitizer either 2,2′-bipyridine (bipy), bathophenanthroline (bath) or 5-nitro-1,10-phenanthroline (5NO2phen) synergistic ligands were synthesized. Upon excitation at maximum absorption of ligands, complexes show characteristic near-infrared (NIR) luminescence Er3+ ions, due to efficient energy transfer from central ion via antenna effect. Single crystals grown their structures determined showing different Er–N distances. The compound shorter distances, was found be best light harvester for transferring lanthanide among three studied compounds. Finally, have been assessed application in sol–gel polymer-based waveguides optical amplifiers through inclusion into ormosil polymethylmethacrylate matrices. dispersion successful bipy 5NO2phen cases, properties hybrid materials mimicking those pure complexes.

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