1/1/2023 0 Comments Core shell top ligandMeanwhile, an improved luminescent stability property of the core–shell–shell nanostructured composites was observed for the aqueous solution. The core–shell and core–shell–shell nanostructured composites exhibited excellent luminescence in the solid state. An amorphous silica shell was coated around the SiO SiO core–shell nanostructured composites. Furthermore, silica-modified SiO 2, SiO 2 core–shell–shell nanostructured composites were also synthesized by sol–gel chemical route, which involved the hydrolysis and polycondensation processes of tetraethoxysilane (TEOS) using cetyltrimethyl ammonium bromide (CTAB) as a surface-active agent. The organosilane (HOOCC 5H 4NN(CONH(CH 2) 3Si(OCH 2CH 3) 3) 2 (abbreviated as ANA-Si) was used as the first ligand and 1,10-phenanthroline (phen) or 2-thenoyltrifluoroacetone (TTA) was used as the second ligand. The terbium ion was coordinated with organic ligand-forming terbium organic complex in the shell layer. The core and shell were connected together by covalent bonds. Three novel core–shell nanostructured composites SiO SiO (L = second ligand) with SiO 2 as the core and terbium organic complex as the shell were successfully synthesized.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |