Continuous injection synthesis of indium arsenide quantum dots emissive in the short-wavelength infrared
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Continuous injection.pdf
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Author(s)
Franke, Daniel
Bruns, Oliver Thomas
Carr, Jessica Ann
Bawendi, Moungi G
Harris, Daniel Kelly
Wilson, Mark William Brennan
Chen, Ou
Date Issued
November 2016
Journal
Nature Communications
Publisher
Nature Publishing Group
Citation
Franke, Daniel et al. “Continuous Injection Synthesis of Indium Arsenide Quantum Dots Emissive in the Short-Wavelength Infrared.” Nature Communications 7 (2016): 12749.
Version
Final published version
Abstract
With the emergence of applications based on short-wavelength infrared light, indium arsenide quantum dots are promising candidates to address existing shortcomings of other infrared-emissive nanomaterials. However, III–V quantum dots have historically struggled to match the high-quality optical properties of II–VI quantum dots. Here we present an extensive investigation of the kinetics that govern indium arsenide nanocrystal growth. Based on these insights, we design a synthesis of large indium arsenide quantum dots with narrow emission linewidths. We further synthesize indium arsenide-based core-shell-shell nanocrystals with quantum yields up to 82% and improved photo- and long-term storage stability. We then demonstrate non-invasive through-skull fluorescence imaging of the brain vasculature of murine models, and show that our probes exhibit 2–3 orders of magnitude higher quantum yields than commonly employed infrared emitters across the entire infrared camera sensitivity range. We anticipate that these probes will not only enable new biomedical imaging applications, but also improved infrared nanocrystal-LEDs and photon-upconversion technology.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Terms of Use
Creative Commons Attribution 4.0 International License
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DOI of Published Version
https://doi.org/10.1038/ncomms12749
