One-pot, large-scale synthesis silica-encapsulated NIR alloy quantum dots CdSeTe within short time

摘要: Silica-based near-infrared fluorescent materials in biological application have attracted much attention. But the current methods for preparing silica-encapsulated radiation (NIR) quantum dots (QDs) are commonly time-consuming and can only obtain a few products one batch. Herein, we present fast facile one-pot aqueous-phase route to prepare NIR-emitting CdSeTe QDs at large scale. The influences of various experimental conditions on luminescent properties obtained silica hybrids been systematically investigated, such as capping agent, reaction time, pH value so on. final product has characterized by X-ray diffraction, transmission electron microscope, photoluminescent spectra energy dispersive x-ray spectroscopy (EDX). silica-coated be within 10 h under optimized conditions. yield is 3.70 g spherical with an average particle size around 15 nm.