Near-infrared photochemistry at interfaces based on upconverting nanoparticles

Area of Science:

• Biomedical Engineering
• Materials Science
• Photochemistry

Background:

• Near-infrared (NIR) light is preferred for biomedical applications due to deep tissue penetration and minimal photodamage compared to UV light.
• Controlling biointerfaces with NIR light is a growing area of research interest.
• Upconverting nanoparticles (UCNPs) can convert NIR light into UV or visible light.

Purpose of the Study:

• To review the fundamentals of UCNP-assisted photochemistry at interfaces.
• To highlight potential applications of this technology in controlling biointerfaces.
• To discuss current challenges and future directions in the field.

Main Methods:

• Utilizing UCNPs to convert NIR light into shorter wavelengths (UV/visible).
• Inducing photoreactions of photosensitive compounds at interfaces using the converted light.
• Applying UCNP-assisted photochemistry to modify interfacial properties of various systems.

Main Results:

• Demonstrated UCNP-assisted photochemistry at interfaces for controlling nanomaterials, implants, emulsions, and cells.
• Established the mechanism of NIR light-triggered interfacial modification via UCNPs.
• Showcased the versatility of UCNP-assisted photochemistry across different biomedical contexts.

Conclusions:

• UCNP-assisted photochemistry provides a powerful tool for NIR light-mediated control of biointerfaces.
• This approach has significant potential for advancing nanomedicine, regenerative medicine, and drug delivery.
• Further research is needed to address challenges related to UCNP stability, biocompatibility, and precise spatial control.