Efficient Photo-Modulation of the Luminescence of Lanthanide (III) Ions in the Visible or Near Infrared

摘要

Efficient Photo-Modulation of the Luminescence of Lanthanide (III) Ions in the Visible or Near Infrared The invention relates to photochromic complexes of lanthanide (III) ions of chemical formula (I) and their use in various fields of application, in particular in security systems for identification, authentication, and / or identification. protection against imitation, forgery or counterfeiting of security paper, valuable document, commercial property or other article. The invention also relates to methods and kits for implementing these security systems. (no figure)