Facile Bottom-up Preparation of WS₂-Based Water-Soluble Quantum Dots as Luminescent Probes for Hydrogen Peroxide and Glucose.

ABSTRACT: Photoluminescent zero-dimensional (0D) quantum dots (QDs) derived from transition metal dichalcogenides, particularly molybdenum disulfide, are presently in the spotlight for their advantageous characteristics for optoelectronics, imaging, and sensors. Nevertheless, up to now, little work has been done to synthesize and explore photoluminescent 0D WS₂ QDs, especially by a bottom-up strategy without using usual toxic organic solvents. In this work, we report a facile bottom-up strategy to synthesize high-quality water-soluble tungsten disulfide (WS₂) QDs through hydrothermal reaction by using sodium tungstate dihydrate and L-cysteine as W and S sources. Besides, hybrid carbon quantum dots/WS₂ QDs were further prepared based on this method. Physicochemical an

SUBMITTER: Hang DR 

PROVIDER: S-EPMC6689045 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature