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首页> 外文期刊>RSC Advances >Organosilatranes with thioester-anchored heterocyclic ring assembly: Cu2+ ion binding and fabrication of hybrid silica nanoparticles
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Organosilatranes with thioester-anchored heterocyclic ring assembly: Cu2+ ion binding and fabrication of hybrid silica nanoparticles

机译：有机硫杂环丙烷与硫酯固定的杂环组装：Cu2 +离子键合和杂化二氧化硅纳米粒子的制备

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摘要

This work presents the design, synthesis, UV-Vis absorption properties and Cu2+ ion binding of the organo-silicon complexes (3a-h) with different coordination abilities that are derived from mercaptopropylsilatrane (MPS) and respective heteroaromatic carboxylic acids (1a-h). The prepared thioester based organosilatranes (ThE-OS) have been meticulously characterized by a series of characterization techniques such as elemental analyses, FT-IR, NMR (H-1, C-13), LC-MS, and structure of 3e was unambiguously determined by X-ray single crystal analyses. All the compounds have shown judicious absorption enhancement in the intensity as well as lambda(max) values on binding with Cu2+ ions compared to other surveyed metal ions. In addition, it is for the first time that the hybrid silica nanoparticles (H-SiNPs) bearing a thioester linkage in the silica framework are reported. The synthesis was achieved conveniently by an in situ co-condensation reaction of tetraethyl orthosilicate (TEOS) with the corresponding ThE-OS. The derivatization of silica is confirmed by FT-IR, C-13 and Si-29 solid state CP-MAS NMR, UV-Vis, TEM, XRD, TGA and EDX techniques. Furthermore, the H-SiNPs have exhibited greater affinity towards Cu2+ ions than the parent ThE-OS.
机译：这项工作介绍了具有不同配位能力的有机硅配合物（3a-h）的设计，合成，UV-Vis吸收特性和Cu2 +离子键合，这些配合物衍生自巯基丙基硅氮烷（MPS）和相应的杂芳族羧酸（1a-h） 。制备的硫代酯基有机硅基转移酶（ThE-OS）已通过一系列表征技术（例如元素分析，FT-IR，NMR（H-1，C-13），LC-MS）进行了精心表征，并且3e的结构明确由X射线单晶分析确定。与其他调查的金属离子相比，所有化合物在与Cu2 +离子结合时均显示出强度和λ（max）值的明智吸收增强。另外，首次报道了在二氧化硅骨架中带有硫酯键的杂化二氧化硅纳米颗粒（H-SiNPs）。通过原硅酸四乙酯（TEOS）与相应的ThE-OS的原位共缩合反应可以方便地实现合成。二氧化硅的衍生化通过FT-IR，C-13和Si-29固态CP-MAS NMR，UV-Vis，TEM，XRD，TGA和EDX技术确认。此外，与母体ThE-OS相比，H-SiNPs对Cu2 +离子的亲和力更大。

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