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Bright and nontoxic quantum dots (QDs) are highly desirable in a variety of applications, from solid-state devices to luminescent probes in assays. However, the processability of these species is often curbed by their surface chemistry, which limits their dispersibility in selected solvents. This renders a surface modification step often mandatory to make the QDs compatible with the solvent of interest. Here, we present a new synthetic approach to produce CuInS2 QDs compatible with organic polar solvents and readily usable for the preparation of composite materials. 3-Mercaptopropyl trimethoxysilane (MPTS) was used simultaneously as solvent, sulfur source, and capping agent for the QD synthesis. The synthesized QDs possessed a maximum photoluminescence quantum yield around 6%, reaching approximately 55% after growing a ZnS shell. The partial condensation of MPTS molecules on the surface of QDs …
American Chemical Society
Publication date: 
1 Apr 2019

Riccardo Marin, Alvise Vivian, Artiom Skripka, Andrea Migliori, Vittorio Morandi, Francesco Enrichi, Fiorenzo Vetrone, Paola Ceroni, Carmela Aprile, Patrizia Canton

Biblio References: 
Volume: 2 Issue: 4 Pages: 2426-2436
ACS Applied Nano Materials