Critical Aspects on the Chemical Stability of NaYF4-Based Upconverting Nanoparticles for Biomedical Applications
Maria F Torresan1, Alejandro Wolosiuk1
1Gerencia Química Comisión Nacional de Energía Atómica (CNEA) - INN - CONICET, Av. Gral. Paz 1499, B1650KNA San Martín, Argentina.
ACS Applied Bio Materials
|January 11, 2022
Summary
This review examines the chemical stability of sodium yttrium fluoride-based upconverting nanoparticles (UCNPs) in water. Understanding UCNP degradation is crucial for their safe application in biomedical materials and diagnostics.
Area of Science:
- Materials Science
- Nanotechnology
- Biomedical Engineering
Background:
- Sodium yttrium fluoride-based upconverting nanoparticles (UCNPs) are promising for biomedical applications.
- Their chemical stability in aqueous solutions is critical for safe and effective use.
- Degradation can lead to cytotoxicity and loss of optical properties.
Purpose of the Study:
- To review experimental evidence and mechanisms of UCNP degradation in aqueous environments.
- To provide a theoretical framework for understanding UCNP destabilization and dissolution.
- To highlight the importance of chemical stability for biomedical applications.
Main Methods:
- In-depth analysis of experimental data on UCNP degradation.
- Review of proposed mechanisms for UCNP destabilization and dissolution.
- Summary of characterization techniques for monitoring UCNP degradation.
Main Results:
- UCNP degradation is influenced by media composition, temperature, particle size, and synthesis methods.
- Ion release and crystal disintegration are key degradation pathways.
- Degradation impacts both optical properties and biological safety.
Conclusions:
- Understanding UCNP chemical stability is vital for their development as biomedical materials.
- Bridging the gap between physicochemical properties and biological response is essential.
- Further research into nanoparticle-interface chemistry will guide rational material design.
