Laboratory of Physical Biology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China.
Nanotechnology. 2011 Aug 26;22(34):345601. doi: 10.1088/0957-4484/22/34/345601. Epub 2011 Jul 28.
Polyvinylpyrrolidone-protected (PVP-protected) graphene was synthesized by refluxing graphene oxide (GO) in dimethylformamide (DMF), using PVP as the dispersant. The structure and stability of this composite (DMF-rGO) were characterized using UV-vis spectroscopy, atomic force microscopy (AFM), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), x-ray diffraction (XRD) and thermogravimetric analysis (TGA). The results confirm the presence of a single sheet of DMF-rGO with PVP of 42%. This kind of chemically reduced GO has a greater solubility in water and also is more biocompatible than rGO reduced by hydrazine hydrate. This method is simple, environmentally friendly and the composite has potential applications in biology and polymer nanocomposites.
聚维酮保护（PVP 保护）石墨烯是通过在二甲基甲酰胺（DMF）中回流氧化石墨烯（GO），使用 PVP 作为分散剂合成的。使用紫外可见分光光度法、原子力显微镜（AFM）、拉曼光谱、傅里叶变换红外光谱（FTIR）、X 射线衍射（XRD）和热重分析（TGA）对该复合材料（DMF-rGO）的结构和稳定性进行了表征。结果证实了具有 42%PVP 的 DMF-rGO 单层的存在。这种化学还原的 GO 在水中的溶解度更大，并且比水合肼还原的 rGO 更具生物相容性。该方法简单、环保，这种复合材料在生物学和聚合物纳米复合材料方面具有潜在的应用。
