Epitaxial growth of ultrathin layers on the surface of sub-10nm nanoparticles: the case of -NaGdF4:Yb/Er@NaDyF4 nanoparticles

Su Yang; Hao Li-Na; Liu Kun; Zhang Jun; Dong Liang; Xu Yunjun; Lu Yang; Qian Hai-Sheng

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Epitaxial growth of ultrathin layers on the surface of sub-10nm nanoparticles: the case of -NaGdF4:Yb/Er@NaDyF4 nanoparticles

机译：超薄层在亚10NM纳米粒子表面上的外延生长：NAGDF4：YB / ER @ NADYF4纳米颗粒的情况

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Upconversion core-shell nanoparticles have attracted a large amount of attention due to their multifunctionality and specific applications. In this work, based on a NaGdF4 sub-10 nm ultrasmall nanocore, a series of core-shell upconversion nanoparticles with uniform size doped with Yb3+, Er3+ and NaDyF4 shells with different thicknesses were synthesized by a facile sequential growth process. NaDyF4 coated upconversion luminescent nanoparticles showed an obvious fluorescence quenching under excitation at 980 nm as a result of energy resonance transfer between Yb3+, Er3+ and Dy3+. NaGdF4:Yb,Er@NaDyF4 core-shell nanoparticles with ultrathin layer shells exhibited a better T-1-weighted MR contrast.

机译：由于其多功能性和特定应用，上转换核 - 壳纳米粒子引起了大量的关注。在这项工作中，基于NAGDF4亚-10nm超大纳米inocore，通过容易的顺序生长过程合成了一系列具有均匀尺寸的含有均匀尺寸的芯壳上转化纳米粒子。 NADYF4涂覆的上转换发光纳米颗粒在yb3 +，ER3 +和DY3 +之间的能量共振转移的结果下，在980nm的激发下显示出明显的荧光猝灭。 NAGDF4：YB，ER @ NADYF4核 - 壳纳米粒子具有超薄层壳的纳米粒子表现出更好的T-1加权MR对比度。

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来源
《RSC Advances》 |2018年第23期|共7页
作者
Su Yang; Hao Li-Na; Liu Kun; Zhang Jun; Dong Liang; Xu Yunjun; Lu Yang; Qian Hai-Sheng;
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作者单位

Hefei Univ Technol Dept Chem Hefei 230009 Anhui Peoples R China;

Hefei Univ Technol Dept Med Mat &

Rehabil Engn Sch Med Engn Hefei 230009 Anhui Peoples R China;

Hefei Univ Technol Dept Med Mat &

Rehabil Engn Sch Med Engn Hefei 230009 Anhui Peoples R China;

Hefei Univ Technol Analyt &

Testing Ctr Hefei 230009 Anhui Peoples R China;

Univ Sci &

Technol China Hefei Natl Lab Phys Sci Microscale Hefei 230026 Anhui Peoples R China;

Anhui Prov Hosp Dept Radiol Hefei 230001 Anhui Peoples R China;

Hefei Univ Technol Dept Chem Hefei 230009 Anhui Peoples R China;

Hefei Univ Technol Dept Med Mat &

Rehabil Engn Sch Med Engn Hefei 230009 Anhui Peoples R China;

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正文语种 eng
中图分类化学;
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1. Epitaxial growth of ultrathin layers on the surface of sub-10nm nanoparticles: the case of -NaGdF4:Yb/Er@NaDyF4 nanoparticles [J] . Su Yang, Hao Li-Na, Liu Kun, RSC Advances . 2018,第23期

机译：超薄层在亚10NM纳米粒子表面上的外延生长：NAGDF4：YB / ER @ NADYF4纳米颗粒的情况
2. In situ epitaxial growth of GdF3 on NaGdF4:Yb,Er nanoparticles [J] . Li Jiangfeng, Jia Yunling, Xu Yuejiao, Inorganic Chemistry Frontiers . 2017,第12期

机译：原位外延GDF3在NAGDF4：YB，ER纳米粒子上
3. Metal nanoparticles on polymer surfaces. 7. The growth kinetics of gold nanoparticles embedded into surface layers of glassy polymers [J] . Dementeva O. V., Kartseva M. E., Ogarev V. A., Colloid journal . 2017,第1期

机译：聚合物表面上的金属纳米颗粒。 7.金纳米颗粒的生长动力学嵌入玻璃聚合物的表面层中
4. Shortwave-infrared emitters for biological imaging based on Yb-Er-Tm and Yb-Er-Ho tridoped core-shell NaGdF4 nanoparticles [C] . D.V. Pominova, V. Yu. Proydakova, I.D. Romanishkin, International Conference Laser Optics . 2020

机译：基于YB-ER-TM和YB-ER-HO的生物成像的短波红外发射器克雷德核心壳NagdF4纳米粒子
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Epitaxial growth of ultrathin layers on the surface of sub-10nm nanoparticles: the case of -NaGdF4:Yb/Er@NaDyF4 nanoparticles

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