Luminescent materials of upconversion and method of preparing them (Machine-translation by Google Translate, not legally binding)

摘要

Luminescent materials upconversion and method of preparation thereof. The present invention relates to nanoparticles of formula mlnf4: re3, where m is an alkali metal, ln is a lanthanide element or an analogue thereof and re sup 3 is a rare earth ion or combinations thereof; characterized in that said nanoparticles comprise organic ligands bonded to their surface by covalent bonds. The invention furthermore relates to a method of preparing the upconversion luminescent nanoparticles of the invention, to the use of the upconversion luminescent nanoparticles of the invention as fluorescent or photosensitizing markers and to a luminescent composite comprising the luminescent nanoparticles of upconversion of the invention. (Machine-translation by Google Translate, not legally binding)