chapter  Chapter 21
Routes to Chemical Modification of the Surface of Nanosized Fluorides
WithA. V. Safronikhin, H. V. Ehrlich, G. V. Lisichkin
Pages 10

In the investigation EuF3 nanoparticles modification method is proposed. Ligand-assisted synthesis of RE fluorides makes it possible to obtain stable colloids of surface-modified nanoparticles. This method gives products with higher values of coordinated ligand surface density and can be also used to control the nanoparticle size and shape. Formation of a chemical bond between the ligands and metal ions is shown by IR and luminescence spectroscopies. It is shown that surface modification is a way to enhance the luminescence. EuF3 nanoparticles modified with Dbm and Phen have intense luminescence, with red emission at ~612 nm prevailed. It is shown that energy transfer from the coordinated Phen and Dbm to Eu3+ ions in the surface complexes makes a main contribution to the luminescence intensity increase.