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首页> 外文期刊>Royal Society Open Science >Synthesis and photoluminescence properties of silica-modified SiO2@ANA-Si-Tb@SiO2, SiO2@ANA-Si-Tb-L@SiO2 core–shell–shell nanostructured composites
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Synthesis and photoluminescence properties of silica-modified SiO2@ANA-Si-Tb@SiO2, SiO2@ANA-Si-Tb-L@SiO2 core–shell–shell nanostructured composites

机译：二氧化硅改性的SiO2 @ ANA-Si-Tb @ SiO2，SiO2 @ ANA-Si-Tb-L @ SiO2核-壳-壳纳米结构复合材料的合成和光致发光性能

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Three novel core–shell nanostructured composites SiO 2 @ANA-Si-Tb, SiO 2 @ANA-Si-Tb-L (L = second ligand) with SiO 2 as the core and terbium organic complex as the shell were successfully synthesized. The core and shell were connected together by covalent bonds. The terbium ion was coordinated with organic ligand-forming terbium organic complex in the shell layer. The organosilane (HOOCC 5 H 4 NN(CONH(CH 2 ) 3 Si(OCH 2 CH 3 ) 3 ) 2 (abbreviated as ANA-Si) was used as the first ligand and 1,10-phenanthroline (phen) or 2-thenoyltrifluoroacetone (TTA) was used as the second ligand. Furthermore, silica-modified SiO 2 @ [email?protected] 2 , SiO 2 @ [email?protected] 2 core–shell–shell nanostructured composites were also synthesized by sol–gel chemical route, which involved the hydrolysis and polycondensation processes of tetraethoxysilane (TEOS) using cetyltrimethyl ammonium bromide (CTAB) as a surface-active agent. An amorphous silica shell was coated around the SiO 2 @ANA-Si-Tb, SiO 2 @ANA-Si-Tb-L core–shell nanostructured composites. The core–shell and core–shell–shell nanostructured composites exhibited excellent luminescence in the solid state. Meanwhile, an improved luminescent stability property of the core–shell–shell nanostructured composites was observed for the aqueous solution. This type of core–shell–shell nanostructured composites exhibited bright luminescence, high stability and good solubility, which may present potential applications in the fields of optoelectronic devices, bio-imaging, medical diagnosis and study on the structure of function composite materials.
机译：成功地合成了三种新颖的核壳纳米结构复合材料SiO 2 @ ANA-Si-Tb，SiO 2 @ ANA-Si-Tb-L（L =第二配体），以SiO 2为核，b有机配合物为壳。核和壳通过共价键连接在一起。 shell离子在壳层中与形成有机配体的ter有机配合物配位。使用有机硅烷（HOOCC 5 H 4 NN（CONH（CH 2）3 Si（OCH 2 CH 3）3）2）（缩写为ANA-Si）作为第一配体，并使用1,10-菲咯啉（phen）或2-壬基三氟丙酮（TTA）用作第二配位体，此外，还通过溶胶-凝胶化学法合成了二氧化硅改性的SiO 2 @ [电子邮件保护的] 2，SiO 2 @ [电子邮件保护的] 2核-壳-壳纳米结构复合材料路线，涉及使用十六烷基三甲基溴化铵（CTAB）作为表面活性剂的四乙氧基硅烷（TEOS）的水解和缩聚过程，在SiO 2 @ ANA-Si-Tb，SiO 2 @ ANA-周围包覆无定形二氧化硅壳Si-Tb-L核-壳纳米结构复合材料。核-壳和核-壳-壳纳米结构复合材料在固态下表现出优异的发光性能，同时观察到核-壳-壳纳米结构复合材料的发光稳定性得到改善。这种类型的核-壳-壳纳米结构复合材料咬合的发光明亮，高稳定性和良好的溶解性，可能在光电器件，生物成像，医学诊断和功能复合材料结构研究等领域具有潜在的应用前景。

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