Volume 127, Issue 49 pp. 14971-14975
Zuschrift

Fluorescence Imaging In Vivo at Wavelengths beyond 1500 nm

Shuo Diao

Shuo Diao

Department of Chemistry, Stanford University, Stanford, California 94305 (USA)

These authors contribute to the work equally.

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Dr. Jeffrey L. Blackburn

Dr. Jeffrey L. Blackburn

Chemical and Materials Science Center, National Renewable Energy Laboratory, Golden, Colorado 80401 (USA)

These authors contribute to the work equally.

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Dr. Guosong Hong

Dr. Guosong Hong

Department of Chemistry, Stanford University, Stanford, California 94305 (USA)

These authors contribute to the work equally.

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Alexander L. Antaris

Alexander L. Antaris

Department of Chemistry, Stanford University, Stanford, California 94305 (USA)

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Dr. Junlei Chang

Dr. Junlei Chang

Division of Hematology, School of Medicine, Stanford University, Stanford, California 94305 (USA)

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Dr. Justin Z. Wu

Dr. Justin Z. Wu

Department of Chemistry, Stanford University, Stanford, California 94305 (USA)

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Bo Zhang

Bo Zhang

Department of Chemistry, Stanford University, Stanford, California 94305 (USA)

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Dr. Kai Cheng

Dr. Kai Cheng

Department of Radiology and Bio-X Program, School of Medicine, Stanford University, Stanford, California 94305 (USA)

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Prof. Calvin J. Kuo

Prof. Calvin J. Kuo

Division of Hematology, School of Medicine, Stanford University, Stanford, California 94305 (USA)

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Prof. Hongjie Dai

Corresponding Author

Prof. Hongjie Dai

Department of Chemistry, Stanford University, Stanford, California 94305 (USA)

Department of Chemistry, Stanford University, Stanford, California 94305 (USA)Search for more papers by this author
First published: 13 October 2015
Citations: 106

Abstract

Compared to imaging in the visible and near-infrared regions below 900 nm, imaging in the second near-infrared window (NIR-II, 1000–1700 nm) is a promising method for deep-tissue high-resolution optical imaging in vivo mainly owing to the reduced scattering of photons traversing through biological tissues. Herein, semiconducting single-walled carbon nanotubes with large diameters were used for in vivo fluorescence imaging in the long-wavelength NIR region (1500–1700 nm, NIR-IIb). With this imaging agent, 3–4 μm wide capillary blood vessels at a depth of about 3 mm could be resolved. Meanwhile, the blood-flow speeds in multiple individual vessels could be mapped simultaneously. Furthermore, NIR-IIb tumor imaging of a live mouse was explored. NIR-IIb imaging can be generalized to a wide range of fluorophores emitting at up to 1700 nm for high-performance in vivo optical imaging.

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