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高效稀土上转换纳米晶体合成

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
详细介绍了上转换纳米晶体的主要合成方法及其优缺点.共沉淀法具有产率高、易大规模制备等优点,但后续需要煅烧结晶,晶体形貌控制较差.水热/溶剂热法能够制备结晶性良好、尺寸均一的纳米晶体,但其发光性能的可调控性相对较差.热分解法能够获得粒径均一的纳米晶体,但需要使用预先制备的金属前驱体.晶种介导的高温生长法和阳离子交换法均可优化晶体的形貌与功能,易获得尺寸分布均一、光学性能优异的上转换纳米晶体.通过主体材料优化、纳米晶体结构设计和仿真设计指导等方法,可以有效提高纳米晶体的发光效率,优化后合成的纳米晶体在生物成像和疾病诊断中展示出良好的应用前景.
Synthesis of efficient rare-earth upconversion nanocrystals
The principal synthesis methods for upconversion nanocrystals(UCNCs)are introduced,and their merits and limitations are evaluated.The co-precipitation technique has high yield and scalability,but necessi-tates subsequent calcination to achieve crystallization,which compromises the control over crystal morpholo-gy.The hydro/solvo-thermal approach yields UCNCs with excellent crystallinity and uniform dimensions.However,it offers limited adjustability in their luminescent properties.The thermal decomposition method al-lows for the production of UCNCs with consistent diameters,but requires the use of pre-synthesized metallic precursors.The seed-mediated high-temperature growth technique and the cation exchange method optimize both the morphology and functionality of the crystals,facilitating the synthesis of UCNCs with homogeneous size distribution and superior optical properties.By optimizing the host material,nano-architectures,and em-ploying simulation-driven synthesis guidelines,these methodologies significantly booster the luminescent effi-ciency of the UCNCs.The optimized UCNCs have substantial potential applications in the fields of biological imaging and disease diagnostics.

upconverting nanocrystalsluminescence optimizationnanocrystal synthesishydrothermal syn-thesiscation exchange method

王睿、梁高林

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东南大学数字医学工程全国重点实验室,南京 211189

东南大学生物科学与医学工程学院,南京 211189

邯郸诺曼科技有限公司,邯郸 057750

上转换纳米晶体 发光性能优化 纳米晶体合成 水热法 阳离子交换法

国家自然科学基金资助项目江苏省前沿引领技术基础研究重大资助项目河北省全职引进高端人才科研资助项目

22204018BK202320072023HBQZYCXY027

2024

10.3969/j.issn.1001-0505.2024.04.022

东南大学学报(自然科学版)
东南大学

东南大学学报(自然科学版)

CSTPCD北大核心
影响因子：0.989
ISSN：1001-0505
年,卷(期)：2024.54(4)
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