Organic fluorescent nanoprobes with NIR-IIb characteristics for deep learning

Area of Science:

• Biomedical Optics
• Nanotechnology
• In Vivo Imaging

Background:

• Near-infrared IIb (NIR-IIb) sub-channel (1500-1700 nm) imaging enhances biological tissue transparency for deep imaging.
• NIR-IIb imaging offers reduced optical damage, suppressed autofluorescence, and minimal light scattering, enabling deep tissue penetration with high spatiotemporal resolution.
• Organic fluorescent nanoprobes (OFNPs) are emerging for NIR-IIb imaging, showing potential for clinical translation.

Purpose of the Study:

• To survey recent developments in organic fluorescent nanomaterials for NIR-IIb imaging.
• To discuss the unique photophysical properties of these NIR-IIb nanoprobes.
• To highlight their utilization in deep imaging within animal models and potential clinical applications.

Main Methods:

• Literature review of organic fluorescent nanoprobes (OFNPs) emitting in the NIR-IIb region.
• Analysis of photophysical properties relevant to deep tissue imaging.
• Examination of applications in animal models and potential for clinical studies.

Main Results:

• NIR-IIb nanoprobes provide enhanced tissue penetration and clarity compared to visible-near-infrared imaging.
• Various organic fluorescent nanomaterials exhibit promising NIR-IIb emission characteristics.
• Demonstrated utility in deep imaging of biological processes in vivo.

Conclusions:

• NIR-IIb imaging with OFNPs holds significant promise for advancing deep tissue imaging in living organisms.
• Further research into OFNPs for NIR-IIb emission is crucial for realizing their full potential in clinical settings.
• This field is rapidly evolving, paving the way for novel diagnostic and therapeutic applications.