An erbium(III)-based NIR emitter with a highly conjugated beta-diketonate for blue-region sensitization

作者：Martin Ramos P^*; Martin I R; Lahoz F; Hernandez Navarro S; Pereira da Silva P S; Hernandez I; Lavin V; Ramos Silva M

来源：Journal of Alloys and Compounds, 2015, 619: 553-559.

DOI：10.1016/j.jallcom.2014.09.090

• Erbium(III)
• beta-Diketonate
• Antenna effect
• Near-infrared
• Photoluminescence

The 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 beta-diketonate (1,3-di(2-naphthyl)-1,3-propanedione, Hdnm) and 5-nitro-1,10-phenanthroline (5NO(2)phen) as an ancillary ligand, [Er(dnm)(3)(5NO(2)phen)], has been synthesized, fully characterized and its photophysical properties have been investigated. Suitably expanded pi-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 mu m emission from the Er3+ ion.

• 出版日期2015-1-15