Resumen: 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 ß-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 p-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. Idioma: Inglés DOI: 10.1016/j.jallcom.2014.09.090 Año: 2015 Publicado en: JOURNAL OF ALLOYS AND COMPOUNDS 619 (2015), 553-559 ISSN: 0925-8388 Factor impacto JCR: 3.014 (2015) Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 58 / 271 = 0.214 (2015) - Q1 - T1 Categ. JCR: METALLURGY & METALLURGICAL ENGINEERING rank: 4 / 73 = 0.055 (2015) - Q1 - T1 Categ. JCR: CHEMISTRY, PHYSICAL rank: 52 / 144 = 0.361 (2015) - Q2 - T2 Factor impacto SCIMAGO: 0.957 - Materials Chemistry (Q1) - Metals and Alloys (Q1) - Mechanics of Materials (Q1) - Mechanical Engineering (Q1)