The use of two-dimensional materials in bulk functional applications requires the ability to fabricate defect-free 2D sheets with large aspect ratios. Despite huge research efforts, current bulk exfoliation methods require a compromise between the quality of the final flakes and their lateral size, restricting the effectiveness of the product. In this work, we describe an intercalation-assisted exfoliation route, which allows the production of high-quality graphene, hexagonal boron nitride, and molybdenum disulfide 2D sheets with average aspect ratios 30 times larger than that obtained via conventional liquid-phase exfoliation. The combination of chlorosulfuric acid intercalation with in situ pyrene sulfonate functionalisation produces a suspension of thin large-area flakes, which are stable in various polar solvents. The described method is simple and requires no special laboratory conditions. We demonstrate that these suspensions can be used for fabrication of laminates and coatings with electrical properties suitable for a number of real-life applications.

在整体功能应用中使用二维材料需要具有制造具有大长宽比的无缺陷2D图纸的能力。尽管进行了大量的研究，但当前的大量剥落方法要求在最终薄片的质量和其横向尺寸之间做出折衷，从而限制了产品的有效性。在这项工作中，我们描述了一种插层辅助的剥离方法，该方法可生产高质量的石墨烯，六方氮化硼和二硫化钼2D薄板，其平均长径比比通过传统液相剥落获得的大30倍。氯硫酸插入与原位磺酸sulf磺酸盐官能化的结合产生了薄的大面积薄片的悬浮液，该薄片在各种极性溶剂中稳定。所描述的方法很简单，不需要特殊的实验室条件。我们证明了这些悬浮液可用于制造具有适合许多实际应用的电性能的层压板和涂料。