A summary of studies on rare earth upconversion nano-fluorescent probes published by Fujian Jianshe

Rare earth doped up-conversion nanoluminescence materials have advantages of high photochemical stability, almost no toxicity, narrow line width, long fluorescence lifetime, tunable fluorescence emission wavelength, etc., and are currently promising and are expected to become new alternatives to traditional down conversion fluorescent probes. A generation of fluorescent biomarker materials.

However, this kind of material has a bottleneck problem with low fluorescence quantum yield, which severely limits its practical application. How to improve the up-conversion luminous efficiency of the material and design an efficient and multifunctional up-conversion nano-fluorescent probe to achieve highly sensitive detection of disease markers is a hot topic in the field.

Under the support of the National Natural Science Foundation of China’s Outstanding Young Scientists, the Joint Fund for Promoting Cross-Strait Science and Technology Cooperation, the Innovation International Team of the Chinese Academy of Sciences, and the Strategic Pilot Science and Technology Project, the Chen Xueyuan Research Group of the Key Laboratory of Optoelectronic Materials Chemistry and Physics, Chinese Academy of Sciences, Institute of Material Structure Chinese Academy of Sciences Invited to publish a review paper entitled "Lanthanide-Doped Upconversion Nano-Bioprobes: Electronic Structures, Optical Properties, and Biodetection" in the flagship issue of the Royal Society of Chemistry "Chemical Review" (Chem. Soc. Rev. 2015, 44, 1379 -1415, Inside Front Cover) and was selected as the inside cover. This review system describes the latest advances in the electronic structure, luminescence physics and biomedical applications of rare earth upconversion nanofluorescent probes (UCNPs), and reviews the in vitro detection of tumor markers in particular.

This review not only comprehensively summarizes the international frontiers and latest achievements in this field, but also conducts in-depth discussions on the future development direction and trends of rare earth upconversion nano-fluorescent probes based on previous research results of the group and puts forward their own opinions. This work is expected to deepen the understanding of domestic and foreign counterparts on rare earth up-conversion nano-fluorescent probes. At the same time, it also has important guiding significance for the future design and development of multifunctional nano-fluorescent biological probes and the high value utilization of rare earth resources.

Previously, the research group has made a series of research progress in the control synthesis, optical properties of rare earth nano fluorescent probes, and the application of tumor marker detection. For example, based on LiLuF4:Yb,Er nano fluorescent probes, up-conversion fluorescence detection of human chorionic gonadotropin β-hCG was achieved (Angew. Chem. Int. Ed. 2014, 53, 1252, volume coloring page); development A novel method based on rare earth nanoprobe-based solubilization-enhanced fluorescence immunoassay (DELBA) and ultra-sensitive detection of carcinoembryonic antigen (CEA) (Angew. Chem. Int. Ed. 2014, 53, 12498; selected as “2014” China's Top Ten Rare Earth Science and Technology News.

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