One-pot synthesis, encapsulation, and solubilization of size-tuned quantum dots with amphiphilic multidentate ligands.
We report one-pot synthesis, encapsulation, and solubilization of high-quality quantum dots (QDs) based on the use of amphiphilic and multidentate polymer ligands. In this "all-in-one" procedure, the resulting QDs are first capped by the multidentate ligand and are then spontaneously encapsulated and solubilized by a second layer of the same multidentate polymer upon exposure to water. In addition to providing better control of nanocrystal nucleation and growth kinetics (including resistance to Ostwald ripening), this procedure allows for in situ growth of an inorganic passivating shell on the nanocrystal core, enabling one-pot synthesis of both type-I and type-II core-shell QDs with tunable light emission from visible to near-infrared wavelengths.
Kairdolf
Brad A
BA
Department of Biomedical Engineering, Emory University, 101 Woodruff Circle, Suite 2001, Atlanta, Georgia 30322, USA.
Smith
Andrew M
AM
Nie
Shuming
S
D019187:Cadmium Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D008024:Ligands; D011092:Polyethylene Glycols / Q000138:chemical synthesis / Q000737:chemistry*; D045663:Quantum Dots; D018036:Selenium Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D012995:Solubility; D013050:Spectrometry, Fluorescence; D013691:Tellurium / Q000737:chemistry*
D019187:Cadmium Compounds; D008024:Ligands; D018036:Selenium Compounds; D011092:Polyethylene Glycols; C058667:cadmium selenide; D013691:Tellurium; C028337:cadmium telluride
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