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Proceedings Paper

Synthesis and spectroscopic evaluation of PbS quantum dots emitting at 1300 nm for optimized imaging in optical window II
Author(s): Alexander P. Aydt; Shane Blair; Hairong Zhang; Boris D. Chernomordik; Matthew C. Beard; Mikhail Y. Berezin
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Paper Abstract

Contrast agents for optical imaging have traditionally been designed for the near-infrared (NIR) spectral range (700-900 nm, Optical Window I) where absorption and scattering of tissue are relatively low. Recently, another window beyond 1000 nm has been discovered known as Optical Window II or the extended Near Infrared (exNIR) with improved transparency. In this work, we present a method to synthesize quantum dots emitting at 1300 nanometers, the optimal wavelength. The quantum dots were synthesized in organic solvents, and a method of transforming them into water is discussed. Optical characterizations including absolute quantum yield and the fluorescence lifetime are presented.

Paper Details

Date Published: 22 April 2016
PDF: 10 pages
Proc. SPIE 9723, Reporters, Markers, Dyes, Nanoparticles, and Molecular Probes for Biomedical Applications VIII, 97230Z (22 April 2016); doi: 10.1117/12.2214509
Show Author Affiliations
Alexander P. Aydt, Washington Univ. School of Medicine in St. Louis (United States)
Shane Blair, Washington Univ. School of Medicine in St. Louis (United States)
Hairong Zhang, Washington Univ. School of Medicine in St. Louis (United States)
Boris D. Chernomordik, National Renewable Energy Lab. (United States)
Matthew C. Beard, National Renewable Energy Lab. (United States)
Mikhail Y. Berezin, Washington Univ. School of Medicine in St. Louis (United States)


Published in SPIE Proceedings Vol. 9723:
Reporters, Markers, Dyes, Nanoparticles, and Molecular Probes for Biomedical Applications VIII
Samuel Achilefu; Ramesh Raghavachari, Editor(s)

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