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 |
Chiral Discrimination Tyrosine Enantiomers Based on N-Acetyl-L-cysteine Modified ZnFe2O4@SiO2 Nanoparticles |
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摘要: 我们将N-乙酰-L-半胱氨酸(NALC)修饰于ZnFe2O4@SiO2纳米材料表面,制备了一种新型的手性纳米复合物(ZnFe2O4@SiO2-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ZnFe2O4@SiO2-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),ZnFe2O4@SiO2-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pH值等实验参数进行了优化。 |
关键词: 手性识别 ZnFe2O4@SiO2-NALC 手性纳米粒子 酪氨酸 |
基金项目: 河北省自然科学基金(No.B2018205152)和河北省引进留学人员基金(No.CL201715)资助项目。 |
Abstract: N-acetyl-L-cysteine (NALC) functionalized ZnFe2O4@SiO2 (ZnFe2O4@SiO2-NALC) was synthesized and exhibited simplicity, rapidity and high selectivity in the separation of chiral tyrosine (Tyr) enantiomers. The chiral nanocomposite 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 transmission electron microscopy (HRTEM) and vibrating sample magnetometer (VSM). This is the first synthesis of ZnFe2O4@SiO2-NALC for chiral recognition. The proposed optical spectroscopic techniques (UV-Vis spectrum and fluorescence spectra) showed excellent enantiospecificity for Tyr enantiomers. Furthermore, the experimental parameters such as the Tyr concentration and the pH values were optimized. |
Keywords: chiral recognition ZnFe2O4@SiO2-NALC chiral nanoparticles tyrosine |
投稿时间:2020-03-28 修订日期:2020-08-28 |
摘要点击次数: 1494 |
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陈少凯,李新,郭晨晨,魏旖儇,袁赛薇,宋会花.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[J].无机化学学报,2020,36(11):2169-2178. |
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Support information: 相关附件: file200148_编号200148修改-Supporting_Information.docx |
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