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基于N-乙酰-L-半胱氨酸修饰的ZnFe2O4@SiO2纳米材料手性识别酪氨酸对映异构体(英文)
Chiral Discrimination Tyrosine Enantiomers Based on N-Acetyl-L-cysteine Modified ZnFe2O4@SiO2 Nanoparticles
【摘要】 我们将N-乙酰-L-半胱氨酸(NALC)修饰于Zn Fe2O4@Si O2纳米材料表面,制备了一种新型的手性纳米复合物(Zn Fe2O4@Si O2-NALC),该材料能够简便、快速及高选择性地识别手性酪氨酸(Tyr)对映体。利用X射线粉末衍射(XRD)、红外光谱(FT-IR)、能量色散X射线光谱(EDS)、扫描电子显微镜(SEM)、高分辨率透射电子显微镜(HRTEM)和振动样品磁力计(VSM)等一系列表征手段对首次合成出的Zn Fe2O4@Si O2-NALC进行测试表征,并将其应用于对手性识别领域的探究。实验结果表明,利用光谱技术(紫外-可见光谱和荧光光谱),Zn Fe2O4@Si O2-NALC可对Tyr对映异构体进行手性识别。此外,我们进一步对Tyr浓度和p H值等实验参数进行了优化。
【Abstract】 N-acetyl-L-cysteine(NALC) functionalized ZnFe2O4@SiO2(ZnFe2O4@SiO2-NALC) was synthesized andexhibited simplicity, rapidity and high selectivity in the separation of chiral tyrosine(Tyr) enantiomers.The chiralnanocomposite of ZnFe2O4@SiO2-NALC was characterized by X-ray powder diffraction(XRD), infrared spectroscopy(FT-IR), energy dispersive X-ray spectroscopy(EDS), scanning electron microscopy(SEM), high resolution transmis-sion electron microscopy(HRTEM) and vibrating sample magnetometer(VSM).This is the first synthesis ofZnFe2O4@SiO2-NALC for chiral recognition.The proposed optical spectroscopic techniques(UV-Vis spectrum andfluorescence spectra) showed excellent enantiospecificity for Tyr enantiomers.Furthermore, the experimental param-eters such as the Tyr concentration and the p H values were optimized.
【Key words】 chiral recognition; ZnFe2O4@SiO2-NALC; chiral nanoparticles; tyrosine;
- 【文献出处】 无机化学学报 ,Chinese Journal of Inorganic Chemistry , 编辑部邮箱 ,2020年11期
- 【分类号】O657.3;TB383.1
- 【被引频次】1
- 【下载频次】136