发光学报2015，Vol.36Issue(11)：1266-1270,5.DOI:10.3788/fgxb20153611.1266
β-NaYF4:Yb,Er/Tm/Ho上转换纳米晶的制备及其水溶性研究
Preparation and Water Solubility of NaYF4:Yb,Er/Tm/Ho Up-conversion Nanoparticles
摘要
Abstract
Hexagonal-phase NaYF4: Yb, Er/Ho/Tm up-conversion nanocrystals were synthesized using ricinoleic acid ( RA) as an sufficient and user-friendly surfactant. The strategy is to form small solid-state crystal nuclei at a lower temperature and then make the nuclei further grow and ripen at a higher temperature. The experiment results show that the structure of NaYF4:Yb,Er/Ho/Tm nano-crystal is hexagonal-phase with the diameter of 45 nm. The nanocrystals show strong luminescence under the excitation of a 980 nm laser with the average power about 1 W. When the nanocrystals are dispersed in the mixed solution of water and dichloromethane, we can only see a strong green bright beam in water, which demonstrates the hydrophilic characteristic of RA-NaYF4 nanocrystals. The fluorescence property of NaYF4:Yb,Er/Ho/Tm nanocrystals has no significant change in acidic me-dium or alkaline.关键词
上转换纳米材料/荧光/水溶性/稳定性Key words
up-conversion nanoparticles/fluorescence/water-solubility/stability分类
数理科学引用本文复制引用
徐涛,欧俊,郑伟华,窦涌,宋晓红,黄岚珍..β-NaYF4:Yb,Er/Tm/Ho上转换纳米晶的制备及其水溶性研究[J].发光学报,2015,36(11):1266-1270,5.基金项目
国家自然科学基金(51362006) （51362006）
有色金属及特色材料加工重点实验室开发基金(12KF-17)资助项目 （12KF-17）
