NDLI: Preparation of quantum dot-embedded polymeric nanoparticles using flash nanoprecipitation

Content Provider	Royal Society of Chemistry (RSC)
Author	Clapp, Aaron R. Zhang, Yanjie
Copyright Year	2014
Abstract	We developed a unique and efficient method to encapsulate quantum dots within amphiphilic polymer micelles using the flash nanoprecipitation technique and various micromixers (multi-inlets vortex mixer, MIVM, and confined impinging-jet mixer, CIJM). Owing to the rapid homogeneous mixing provided by the micromixers, we produced highly stable QD-embedded particles with very narrow size distributions. By adjusting the solvent-to-nonsolvent ratio, homopolymer concentration, and micromixer arrangement, the resulting mean particle diameter was varied from 90 to 800 nm. Additionally, the self-quenching of quantum dots, which is commonly observed in confined systems, was nearly eliminated by adding hydrophobic homopolymer during mixing. This technique results in controllable, rapid synthesis of fluorescent polymeric particles that are stable for many months. Potential applications of this method include the efficient synthesis of fluorescent tracer particles, tags for optical barcoding applications, and biosensors that utilize fluorescence resonance energy transfer (FRET).
Starting Page	48399
Ending Page	48410
Page Count	12
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	4
Issue Number	89
Journal	RSC Advances
DOI	10.1039/c4ra07788a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Förster resonance energy transfer Comité international des Jeux méditerranéens Fluorescence Amphiphile Polymer Vortex mixer Micromixer Hydrophobe Quantum tunnelling
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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