Wafer-sized multifunctional polyimine-based two-dimensional conjugated polymers with high mechanical stiffness

作者：Hafeesudeen Sahabudeen, Haoyuan Qi, Bernhard Alexander Glatz, Diana Tranca, Renhao Dong⧫, Yang Hou, Tao Zhang, Christian Kuttner, Tibor Lehnert, Gotthard Seifert, Ute Kaiser, Andreas Fery, Zhikun Zheng, Xinliang Feng · 发表于：Nature Communications · 年份：2016 · DOI：10.1038/ncomms13461 · 被引用次数：377 · 研究领域：Graphene research and applications、Covalent Organic Framework Applications、2D Materials and Applications

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.