摘要
采用自组装与原位生长相结合的方法,以氧化还原石墨烯(RGO)为基板,银纳米粒子作为增强基底,巯基-β-环糊精(SH-β-CD)作为识别功能分子,构筑了具有表面增强拉曼光谱(SERS)效应和超分子识别性能的RGO/Ag/SH-β-CD纳米组装体。在此基础上,以结晶紫作为探针分子对该纳米组装体的SERS性能做了初步研究,并将其应用于1-萘酚、2-萘酚和苯酚分子的识别和检测。结果表明,与单纯的氧化石墨(GO)基板相比,RGO/Ag/SH-β-CD纳米组装体表现出明显的SERS增强效果,且在l-萘酚、2-萘酚和苯酚的浓度分别为10^(-5)mol/L时,RGO/Ag/SH-β-CD能通过其SERS信号的差异将其明显识别。制备的RGO/Ag/SH-β-CD纳米组装体同时具有SERS信号和超分子识别的双重功能,从而有可能在超分子识别领域中得到应用。
In this paper, the RGO/Ag/SH-β-CD nano-assembly were constructed by ＂self-assembly＂ and ＂in situ growth＂ techniques with the properties of surface enhanced Raman scattering （SERS）and supramolecular recognition. In this nano-assembly, reduced graphene oxide （RGO） was used as plate, Ag nanoparticles（ Ag NPs）as SERS-active substrate and thiolated β-cyclodextrin （SH-β-CD）as recognition molecules. Based on this, the SERS spectra of RGO/Ag/SH-β-CD nano-assembly were studied using crystal violet as probe molecules, and this nano-assembly were also applied to molecular recognitions and detectionof 1-Naphthol,2-Naphthol and phenol. Results indicated that RGO/Ag/SH-β-CD nano-assembly showed obvious SERS signals compared with pure GO. Meanwhile, 1-Naphthol, 2-Naphthol and phenol could be recognized clearly at a low concentration of 10^-5 mol/L based on the different SERS signals. These results indicated that the as-prepared RGO/Ag/SH-β-CD nano-assembly possessed both SERS and supramolecular recognition properties and thus may be applied to molecular detections and recognitions.
出处
《齐鲁工业大学学报》
CAS
2015年第2期9-14,共6页
Journal of Qilu University of Technology
基金
国家自然科学基金项目(21301118
21305092)
