22 April 2016 Synthesis and spectroscopic evaluation of PbS quantum dots emitting at 1300 nm for optimized imaging in optical window II
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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.
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Alexander P. Aydt, Alexander P. Aydt, Shane Blair, Shane Blair, Hairong Zhang, Hairong Zhang, Boris D. Chernomordik, Boris D. Chernomordik, Matthew C. Beard, Matthew C. Beard, Mikhail Y. Berezin, Mikhail Y. Berezin, "Synthesis and spectroscopic evaluation of PbS quantum dots emitting at 1300 nm for optimized imaging in optical window II", Proc. SPIE 9723, Reporters, Markers, Dyes, Nanoparticles, and Molecular Probes for Biomedical Applications VIII, 97230Z (22 April 2016); doi: 10.1117/12.2214509; https://doi.org/10.1117/12.2214509
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