Luminescent oxide nanoparticles with enhanced optical properties

摘要: Abstract Yttrium vanadate particles doped with europium are studied for their applications as biomolecule labels. Two parts of our recent work presented. The first concerns the thermal treatment incorporated in a solid matrix. After annealing at 1000 °C and redispersion water by dissolution matrix, structural optical properties greatly improved without any modification size; obtained nanoparticles appear perfect single crystals 39 nm have same emission bulk material. Their quantum yield is worth 39% 5% doping lifetime 1 ms. second aspect functionalization sol–gel condensation aminopropyltriethoxysilane surface particles. chemical accessibility amino groups grafted on measured reaction an organic fluorescent tag fluorescein isothiocyanate (FITC). These amine-coated were coupled to peptidic toxin via cross linker allowed observation motion bound its membrane receptor.