Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan.
Langmuir. 2011 Dec 6;27(23):14563-9. doi: 10.1021/la203253m. Epub 2011 Nov 8.
In this study, we used direct molecular exfoliation for the rapid, facile, large-scale fabrication of single-layered graphene oxide nanosheets (GOSs). Using macromolecular polyaniline (PANI) as a layered space enlarger, we readily and rapidly synthesized individual GOSs at room temperature through the in situ polymerization of aniline on the 2D GOS platform. The chemically modified GOS platelets formed unique 2D-layered GOS/PANI hybrids, with the PANI nanorods embedded between the GO interlayers and extended over the GO surface. X-ray diffraction revealed that intergallery expansion occurred in the GO basal spacing after the PANI nanorods had anchored and grown onto the surface of the GO layer. Transparent folding GOSs were, therefore, observed in transmission electron microscopy images. GOS/PANI nanohybrids possessing high conductivities and large work functions have the potential for application as electrode materials in optoelectronic devices. Our dispersion/exfoliation methodology is a facile means of preparing individual GOS platelets with high throughput, potentially expanding the applicability of nanographene oxide materials.
在这项研究中，我们使用直接分子剥离法快速、简便、大规模地制备单层氧化石墨烯纳米片（GOS）。我们使用高分子聚苯胺（PANI）作为层间扩孔剂，通过苯胺在 2D GOS 平台上的原位聚合，在室温下轻松快速地合成了单个 GOS。化学改性的 GOS 薄片形成了独特的 2D 层状 GOS/PANI 杂化物，其中 PANI 纳米棒嵌入在 GO 层间之间，并延伸到 GO 表面。X 射线衍射表明，在 PANI 纳米棒锚定并生长到 GO 层表面后，GO 基面间距发生了层间扩展。因此，在透射电子显微镜图像中观察到透明折叠的 GOS。具有高电导率和大功函数的 GOS/PANI 纳米杂化物有望作为光电设备中的电极材料应用。我们的分散/剥离方法是一种制备具有高通量的单个 GOS 薄片的简便方法，可能会扩展纳米氧化石墨烯材料的适用性。
