当前位置：
X-MOL 学术
›
Luminescence
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Facile synthesized NaGdF4:Yb,Er peanut-shaped, highly biocompatible, colloidal upconversion nanospheres
Luminescence ( IF 3.2 ) Pub Date : 2022-04-12 , DOI: 10.1002/bio.4249 Anees A Ansari 1 , Joselito P Labis 1 , Aslam Khan 1
Luminescence ( IF 3.2 ) Pub Date : 2022-04-12 , DOI: 10.1002/bio.4249 Anees A Ansari 1 , Joselito P Labis 1 , Aslam Khan 1
Affiliation
|
A facile method was used for the synthesis of peanut-shaped very emissive NaGdF4:Yb, Er upconversion nanospheres (UCNSs) at lower temperatures with uniform size distribution. Crystallographic structure, phase purity, morphology, thermal robustness, biocompatibility, colloidal stability, surface chemistry, optical properties, and luminesce properties were explored by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), zeta potential, thermogravimetric/differential thermal analysis (TGA/DTA), Fourier-transform infrared (FTIR), ultraviolet (UV)-visible and photoluminescence spectroscopic tools. XRD pattern verified the construction of a single-phase, highly-crystalline NaGdF4 phase with a hexagonal structure. Peanut-shaped morphology of the sample was obtained from SEM micrographs which were validated from high-resolution TEM images, to have an equatorial diameter of 170 to 200 nm and a length of 220 to 230 nm, with irregular size, monodispersed, porous structure, and rough surface of the particles. The positive zeta potential value exhibited good biocompatibility along with high colloidal stability as observed from the absorption spectrum. The prepared UCNSs revealed high dispersibility, irregular size peanut-shaped morphology, rough surface, good colloidal stability, and excellent biocompatibility in aqueous media. A hexagonal phase NaGdF4 doped with ytterbium (Yb) and erbium (Er) UCNSs revealed the characteristics of highly dominant emissions located at 520–525, 538–550, and 659–668 nm corresponding to the 2H11/2 → 4I15/2, 4S3/2 → 4I15/2, and 4F9/2 → 4I15/2 transition of Er3+ ions, respectively, as a result of energy transfer from sensitizer Yb3+ ion to emitter Er3+ ion.
中文翻译：
简易合成 NaGdF4:Yb,Er 花生形、高生物相容性、胶体上转换纳米球
一种简便的方法用于在较低温度下合成具有均匀尺寸分布的花生形高发射 NaGdF 4 :Yb, Er 上转换纳米球 (UCNSs)。通过 X 射线衍射 (XRD)、扫描电子显微镜 (SEM)、透射电子显微镜 (TEM)、 zeta 电位、热重/差热分析 (TGA/DTA)、傅里叶变换红外 (FTIR)、紫外 (UV)-可见和光致发光光谱工具。XRD 图案验证了单相、高结晶 NaGdF 4的构造具有六边形结构的相。样品的花生形形态由 SEM 显微照片获得，经高分辨率 TEM 图像验证，赤道直径为 170 至 200 nm，长度为 220 至 230 nm，尺寸不规则，单分散，多孔结构，和粗糙的颗粒表面。从吸收光谱中观察到，正 zeta 电位值表现出良好的生物相容性和高胶体稳定性。所制备的UCNSs表现出高分散性、不规则大小的花生状形态、粗糙的表面、良好的胶体稳定性和在水性介质中优异的生物相容性。六方相 NaGdF 4掺杂镱 (Yb) 和铒 (Er) 的 UCNS 揭示了位于 520–525、538–550 和 659–668 nm 的高主导发射特性，对应于2 H 11/2 → 4 I 15/2 , 4 S 3/2 → 4 I 15/2和4 F 9/2 → 4 I 15/2 Er 3+离子跃迁分别是从敏化剂 Yb 3+离子到发射器 Er 3+离子的能量转移的结果.
更新日期：2022-04-12
中文翻译：
简易合成 NaGdF4:Yb,Er 花生形、高生物相容性、胶体上转换纳米球
一种简便的方法用于在较低温度下合成具有均匀尺寸分布的花生形高发射 NaGdF 4 :Yb, Er 上转换纳米球 (UCNSs)。通过 X 射线衍射 (XRD)、扫描电子显微镜 (SEM)、透射电子显微镜 (TEM)、 zeta 电位、热重/差热分析 (TGA/DTA)、傅里叶变换红外 (FTIR)、紫外 (UV)-可见和光致发光光谱工具。XRD 图案验证了单相、高结晶 NaGdF 4的构造具有六边形结构的相。样品的花生形形态由 SEM 显微照片获得，经高分辨率 TEM 图像验证，赤道直径为 170 至 200 nm，长度为 220 至 230 nm，尺寸不规则，单分散，多孔结构，和粗糙的颗粒表面。从吸收光谱中观察到，正 zeta 电位值表现出良好的生物相容性和高胶体稳定性。所制备的UCNSs表现出高分散性、不规则大小的花生状形态、粗糙的表面、良好的胶体稳定性和在水性介质中优异的生物相容性。六方相 NaGdF 4掺杂镱 (Yb) 和铒 (Er) 的 UCNS 揭示了位于 520–525、538–550 和 659–668 nm 的高主导发射特性，对应于2 H 11/2 → 4 I 15/2 , 4 S 3/2 → 4 I 15/2和4 F 9/2 → 4 I 15/2 Er 3+离子跃迁分别是从敏化剂 Yb 3+离子到发射器 Er 3+离子的能量转移的结果.
京公网安备 11010802027423号