Abstract
Upconversion fluorescent nanoparticles have attracted a lot of attention from scientists with a series of excellent fluorescence properties and have become a research hotspot in the field of bioimaging. In this article, upconversion fluorescent nanoparticles were successfully prepared and their biological toxicity was studied.
Acknowledgments
This study was funded by the National Natural Science Foundation of China (21675091, 21574072, 21874078), the Taishan Young Scholar Program of Shandong Province (tsqn20161027), the Major Science and Technology Innovation Project of Shandong Province (2018CXGC1407), the Key Research and Development Project of Shandong Province (2016GGX102028, 2016GGX102039, 2017GGX20111), the Project of Shandong Province Higher Educational Science and Technology Program (J15LC20), the People's Livelihood Science and Technology Project of Qingdao (166257nsh, 173378nsh), the Innovation Leader Project of Qingdao (168325zhc), and the First Class Discipline Project of Shandong Province.