An erbium(III)-based NIR emitter with a highly conjugated β-diketonate for blue-region sensitization
2014; Elsevier BV; Volume: 619; Linguagem: Inglês
10.1016/j.jallcom.2014.09.090
ISSN1873-4669
AutoresPablo Martín‐Ramos, I.R. Martı́n, F.J. Lahoz, Salvador Hernández-Navarro, Pedro Silva, Ignacio Colomer Hernández, V. Lavı́n, Manuela Ramos Silva,
Tópico(s)Molecular Sensors and Ion Detection
ResumoThe sensitization of lanthanide complexes in the visible region is of particular interest for practical applications such as labeling, biological analysis and optoelectronics. A visible-light sensitized Er3+ complex based on the use of a highly conjugated β-diketonate (1,3-di(2-naphthyl)-1,3-propanedione, Hdnm) and 5-nitro-1,10-phenanthroline (5NO2phen) as an ancillary ligand, [Er(dnm)3(5NO2phen)], has been synthesized, fully characterized and its photophysical properties have been investigated. Suitably expanded π-conjugation in the complex molecule makes the excitation window red-shifted to the visible region (up to 550 nm). Efficient energy transfer by antenna effect results in 1.53 μm emission from the Er3+ ion.
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