Optimizing the performance of dye-sensitized upconversion nanoparticles
| Autor: | Daoyu Xia, Wei Wei, Lei Zhao, Meifeng Wang, Yiru Qin, Zhiwang Cai, Xiaoyu Zhao, Qingwei Song |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Lanthanide
Inert Materials science Process Chemistry and Technology General Chemical Engineering Doping 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Photon upconversion 0104 chemical sciences Ion Upconversion nanoparticles Organic dye Particle size 0210 nano-technology |
| Zdroj: | Dyes and Pigments. 192:109428 |
| ISSN: | 0143-7208 |
| DOI: | 10.1016/j.dyepig.2021.109428 |
| Popis: | Upconversion nanoparticles (UCNPs) are promising for bioimaging, sensing, and other applications, but their upconversion (UC) efficiency is far from satisfactory. Organic dye sensitization is considered to be an effective strategy to improve the performance of UCNPs. In this work, we provide direct evidence that organic sensitizer surpasses inorganic sensitizer in sensitization capability. To maximize the performance of dye-sensitized UCNPs, three critical factors, namely different optically inert lanthanide ions, Yb3+ doping concentration, and particle size, are systemically investigated and optimized. It is found that the optimal Yb3+ doping concentration and particle size are determined to be 20% and ~19 nm for dye-sensitized UCNPs, while different optically inert lanthanide ions have negligible influence on this system. Importantly, our results suggest that dye sensitization is more favorable for improving the performance of smaller-sized UCNPs. Although ultrasmall UCNPs ( |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect