Bai Chao, He Shi, Hu Huai-Ming, Zeng Hui, Zou Feng, Wang Ji-Jiang
Key Laboratory of New Energy & New Functional Materials, Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an 716000, China.
Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, China.
Nanomaterials (Basel). 2021 Oct 28;11(11):2886. doi: 10.3390/nano11112886.
A europium(III) hybrid material Eu(tta)bpdc-SiO@mTiO (Htta = 2-thenoyltrifluoroacetone, Hbpdc = 2,2'-bipyridine-3,3'-dicarboxylic acid) was successfully designed and synthesized by the covalent grafting complex Eu(tta)bpdc to SiO@mTiO core-shell nanosphere. The FT-IR, PXRD, XPS, TEM, HRTEM, SAED, TGA and PL were performed to characterize these materials. The results indicate that core-shell nanosphere structure and anatase crystallites of SiO@mTiO are retained well after grafting the europium complex. Hybrid material Eu(tta)bpdc-SiO@mTiO displays uniform nanosphere structure, bright red color and long lifetime, which can serve as a multicolor emission material modulated by using Al ions via the cation exchange approach under a single-wavelength excitation. To the best of our knowledge, this work is the first multicolor emissive sensor for Al ions based on the lanthanide hybrid material.
通过将共价接枝配合物Eu(tta)bpdc接枝到SiO@mTiO核壳纳米球上，成功设计并合成了一种铕(III)杂化材料Eu(tta)bpdc-SiO@mTiO（Htta = 2-噻吩甲酰三氟丙酮，Hbpdc = 2,2'-联吡啶-3,3'-二羧酸）。采用傅里叶变换红外光谱（FT-IR）、粉末X射线衍射（PXRD）、X射线光电子能谱（XPS）、透射电子显微镜（TEM）、高分辨率透射电子显微镜（HRTEM）、选区电子衍射（SAED）、热重分析（TGA）和光致发光（PL）对这些材料进行了表征。结果表明，接枝铕配合物后，SiO@mTiO的核壳纳米球结构和锐钛矿微晶得以很好地保留。杂化材料Eu(tta)bpdc-SiO@mTiO呈现出均匀的纳米球结构、鲜艳的红色和长寿命，在单波长激发下，通过阳离子交换法利用铝离子可将其作为一种多色发射材料进行调制。据我们所知，这项工作是基于镧系杂化材料的首个用于铝离子的多色发光传感器。
