Synthesis of Spherical Down- and Up-Conversion NaYF4-Based Nanophosphors with Tunable Size in Ethylene Glycol without Surfactants or Capping Additives (Eur. J. Inorg. Chem. 29/2008)

✍ Scribed by Nuria O. Nuñez; Hernán Míguez; Marta Quintanilla; Eugenio Cantelar; Fernando Cussó; Manuel Ocaña

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 538 KB
• Volume: 2008
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/ejic.200890080

✦ Synopsis

Abstract

The cover picture shows spherical nanoparticles consisting of NaYF~4~ co‐doped with Er^3+^/Yb^3+^, which have been synthesised through a procedure simpler and less harmful than other methods previously reported, since it does not require the use of surfactant or capping additives. As illustrated in the picture, these nanoparticles emit visible light in the green and red regions when irradiated with infrared (980 nm) radiation. This property, known as up‐conversion fluorescence, confers on the nanophosphors potential applications in several fields, including biotechnology. Details are discussed in the article by M. Ocaña et al. on p. 4517 ff.