One of the key challenges in two-dimensional (2D) materials is to go beyond graphene, a prototype 2D polymer (2DP), and to synthesize its organic analogues with structural control at the atomic- or molecular-level. Here we show the successful preparation of porphyrin-containing monolayer and multilayer 2DPs through Schiff-base polycondensation reaction at an air-water and liquid-liquid interface, respectively. Both the monolayer and multilayer 2DPs have crystalline structures as indicated by selected area electron diffraction. The monolayer 2DP has a thickness of∼0.7 nm with a lateral size of 4-inch wafer, and it has a Young's modulus of 267±30 GPa. Notably, the monolayer 2DP functions as an active semiconducting layer in a thin film transistor, while the multilayer 2DP from cobalt-porphyrin monomer efficiently catalyses hydrogen generation from water. This work presents an advance in the synthesis of novel 2D materials for electronics and energy-related applications.

中文翻译：

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晶圆尺寸的多功能聚亚胺基二维共轭聚合物，具有较高的机械刚度。

二维（2D）材料的主要挑战之一是超越石墨烯（一种原型2D聚合物（2DP）），并在原子或分子水平上通过结构控制合成其有机类似物。在这里，我们展示了通过席夫碱缩聚反应分别在空气-水和液-液界面上成功制备含卟啉的单层和多层2DP的方法。单层和多层2DP均具有晶体结构，如选定区域的电子衍射所示。单层2DP的厚度为〜0.7nm，晶片的横向尺寸为4英寸，其杨氏模量为267±30GPa。值得注意的是，单层2DP充当薄膜晶体管中的有源半导体层，而钴-卟啉单体的多层2DP有效地催化了水的氢生成。这项工作为电子和能源相关应用提供了新型2D材料合成方面的进展。