The controllable integration of low-dimensional nanomaterials on solid surfaces is pivotal for the fabrication of next-generation miniaturized electronic and optoelectronic devices. For instance, organization of two-dimensional (2D) nanomaterials on polymeric surfaces paves the way for the development of flexible electronics for applications in wearable devices. Nevertheless, the understanding of the molecular interactions between these nanomaterials and the polymeric surfaces remains limited, which impedes the rational design of 2D nanomaterial-based functional coatings. In the current work, we report that graphene oxide (GO) nanosheets, in their dispersion phase, can be adsorbed on multiple polymeric surfaces in a spontaneous manner. Both experimental findings and simulational results indicate that the main driving force is hydrogen bonding interactions, although other molecular interactions such as polarity and dispersion ones contribute to the adsorption as well. The relatively high hydrogen bonding interactions cause not only increased GO surface coverage but also enhanced GO adsorption kinetics on polymeric surfaces. The adsorbed GO layers are robust, which can be explained by the large aspect ratios of GO nanosheets and the presence of multiple spots for molecular interactions. As a proof of concept, GO-covered polymethyl methacrylate effectively decreases surface static charges when compared with its pristine counterpart. The integration of the GO constituents turns many inert polymeric substrates into multifunctional hybrids, and the functional groups on GO can be used further to bridge with additional functional materials for the development of high-performance electronic devices.

中文翻译：

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氧化石墨烯在多个聚合物表面的自发吸附

低维纳米材料在固体表面的可控集成对于制造下一代小型化电子和光电器件至关重要。例如，在聚合物表面组织二维 (2D) 纳米材料为开发用于可穿戴设备的柔性电子产品铺平了道路。然而，对这些纳米材料与聚合物表面之间的分子相互作用的理解仍然有限，这阻碍了基于二维纳米材料的功能涂层的合理设计。在目前的工作中，我们报告说氧化石墨烯 (GO) 纳米片在其分散相中可以自发地吸附在多个聚合物表面上。实验结果和模拟结果都表明主要驱动力是氢键相互作用，尽管其他分子相互作用如极性和分散相互作用也有助于吸附。相对较高的氢键相互作用不仅导致 GO 表面覆盖率增加，而且还导致聚合物表面上的 GO 吸附动力学增强。吸附的 GO 层很坚固，这可以通过 GO 纳米片的大纵横比和多个分子相互作用点的存在来解释。作为概念证明，与原始对应物相比，GO 覆盖的聚甲基丙烯酸甲酯有效地降低了表面静电荷。GO 成分的整合将许多惰性聚合物底物转化为多功能杂化物，