分析化学2026，Vol.54Issue(1)：159-169,11.DOI:10.19756/j.issn.0253-3820.251286
PAA-NaYF4∶Yb3+,Tm3+@NaYF4核壳型稀土掺杂上转换纳米材料的制备和发光性能分析
Synthesis and Luminescent Properties of PAA-NaYF4∶Yb3+,Tm3+@NaYF4 Core-Shell Upconversion Nanoparticles
摘要
Abstract
To enhance the performance and expand the application fields of rare-earth-elements-doped upconversion nanomaterials(REEs-UCNPs),NaYF4∶Yb3+,Tm3+@NaYF4 core-shell upconversion nanomaterials were successfully synthesized via a solvothermal method in this study.Key synthesis parameters,including the core-shell ratio,reaction temperature,reaction time,and oleic acid(OA)/octadecene(ODE)volume ratio,were systematically optimized to achieve optimal results.The effects of these conditions on the morphology and luminescence properties of the materials were comprehensively investigated using transmission electron microscopy,X-ray diffraction,fluorescence spectroscopy,scanning electron microscopy,CIE chromaticity analysis,Fourier transform infrared spectroscopy,and Zeta potential measurements.The results indicated that the optimal synthesis conditions were as follows:a core-to-shell molar ratio of 1∶0.5,a reaction temperature of 300℃,a reaction time of 90 min,and an OA/ODE volume ratio of 4.8:12.Based on these conditions,polyacrylic acid(PAA)-surface-modified composite materials,denoted as PAA-NaYF4∶Yb3+,Tm3+@NaYF4,were successfully prepared via a ligand exchange method.Characterization results revealed that the modified nanoparticles retained their original crystal phase and morphology,with a uniform particle size distribution and an average diameter of(43.72±0.22)nm.Furthermore,the dispersibility and water solubility were significantly improved.In terms of luminescence performance,the PAA-modified materials still exhibited blue upconversion fluorescence under 980 nm near-infrared excitation.Zeta potential analysis confirmed the successful coating of PAA,as the nanoparticle surface carried a negative charge.The successful synthesis of this material laid a solid foundation for its potential applications in bioimaging and sensing.关键词
稀土掺杂上转换纳米材料/核壳结构/溶剂热法/配体交换法/聚丙烯酸Key words
Rare-earth-elements-doped upconversion nanomaterials/Core-shell structure/Solvothermal method/Ligand exchange method/Polyacrylic acid引用本文复制引用
郭文,赵伟馨,武玥,张嘉,付友,彭微,李淑荣,张凌燕,孟佩俊..PAA-NaYF4∶Yb3+,Tm3+@NaYF4核壳型稀土掺杂上转换纳米材料的制备和发光性能分析[J].分析化学,2026,54(1):159-169,11.基金项目
国家自然科学基金项目(Nos.82360656,81960601)、内蒙古自治区高等学校青年科技英才支持项目(No.NJYT23026)、内蒙古自治区自然科学基金项目(Nos.2023MS08009,2025LHMS08034)和包头医学院公共卫生与预防医学博士点建设专项科学研究基金项目(No.BYJJ-GWZX202508)资助. Supported by the National Natural Science Foundation of China(Nos.82360656,81960601),the Program for Young Talents of Science and Technology in Universities of Inner Mongolia Autonomous Region(No.NJYT23026),the Provincial Natural Science Foundation of Inner Mongolia Autonomous Region(Nos.2023MS08009,2025LHMS08034),and the Special Scientific Research Fund for the Construction of Doctoral Programs in Public Health and Preventive Medicine,Baotou Medical College(No.BYJJ-GWZX202508). （Nos.82360656,81960601）
