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Updated: Jan 1, 2026

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A Bright NIR-II Fluorescence Probe for Vascular and Tumor Imaging
Published on: March 17, 2023
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Molecular imaging in the second near-infrared window
Hao Wan1, Haotian Du1, Feifei Wang1
1Department of Chemistry, Stanford University, Stanford, CA 94305, USA.
Summary
Second near-infrared (NIR-II) window fluorescence imaging offers deep tissue penetration and high resolution for molecular imaging. This report highlights advancements in NIR-II imaging probes and their applications, guiding future probe development.
Area of Science:
- Biomedical Imaging
- Molecular Imaging
- Optical Engineering
Background:
- Significant advancements in fluorescence imaging within the second near-infrared (NIR-II) window have been observed over the past decade.
- NIR-II fluorescence imaging provides superior deep tissue penetration and high spatial-temporal resolution, crucial for physiological process profiling.
- Molecular imaging is a key technique for understanding biological activities at the molecular and cellular levels.
Purpose of the Study:
- To summarize recent achievements in NIR-II molecular imaging.
- To highlight strategies for designing effective NIR-II imaging probes.
- To provide guidance for the development of advanced NIR-II probes for high-performance molecular imaging.
Main Methods:
- Review and summarization of selected achievements in NIR-II molecular imaging.
- Analysis of rational design strategies for NIR-II imaging probes.
- Highlighting the applications of these probes in molecular imaging.
Main Results:
- Progress in NIR-II fluorescence imaging enhances molecular imaging capabilities.
- Rational probe design is key to optimizing NIR-II imaging performance.
- NIR-II molecular imaging provides more detailed and accurate biological information.
Conclusions:
- Extending molecular imaging into the NIR-II window significantly improves imaging performance.
- The report provides a framework for understanding NIR-II probe design and application.
- Future development of functional NIR-II probes will benefit from these insights for advanced molecular imaging.

