Abstract
UCF researchers have created a surfactant-free, water-based, chemical precipitation method to create high-quality, dopant-based, water-dispersible Sol-Glow™ particles. This method overcomes current limitations of synthesis and purification processes that are extremely cumbersome, time-consuming, expensive, and generate undesirable waste materials. This one-pot, chemical synthesis method is simple, rapid and suitable for producing Sol-Glow particles in bulk quantity on a metric ton scale. By eliminating the need for HCl to achieve fluorescence, Sol-Glow is also environmentally friendly.
For agriculture industry applications, Sol-Glow can serve as a plant nutrient fertilizer as well as an antimicrobial agent to protect crops from bacterial and other microbial infections. This method can be used in various inorganic light-sensitive semiconductor materials and subsequently coated with various fluorescent dye materials, using chemical reaction methodology. Being surfactant-free, Sol-Glow particles provide greater light-emitting intensity, eliminating quenching and absorption caused by surfactant residue. Additionally, Sol-Glow particles have increased sensitivity to light.
Technical Details
This novel method involves mixing in an aqueous solution a water-soluble, first core metal precursor material (e.g. cadmium acetate, zinc acetate, manganese acetate, or similar material) with a water-soluble, first dopant precursor material (e.g. sodium sulfide) to form a doped metal core material. This mixture creates a surfactant-free, core-shell, light-emitting particle. Additionally, adjusting the pH of the final composition from 3 to 6 can provide higher efficiency in Sol-Glow particle production. The water dispersibility of Sol-Glow was accomplished through surface modifications with hydrophilic coating agents, including sodium gluconate, sodium salicylate, quaternary ammonium, hydrogen peroxide, and tetraethyl orthosilicate (silica), for multifunctional applications.
Benefit
Environmentally friendlyFaster synthesis timesIncreased cost efficiencyLarge-scale production capabilityGreater light-emitting intensityIncreased particle sensitivity to lightMarket Application
AgricultureFertilizerPesticideBiomedicalTaggantElectronics/Opto-electronicsSolar cellsLasers and Electro-Optics (LEOs)
Brochure