CC BY 4.0 UnportedSahabudeen, HafeesudeenQi, HaoyuanGlatz, Bernhard AlexanderTranca, DianaDong, RenhaoHou, YangZhang, TaoKuttner, ChristianLehnert, TiborSeifert, GotthardKaiser, UteFery, AndreasZheng, ZhikunFeng, Xinliang2022-08-102022-08-102016https://oa.tib.eu/renate/handle/123456789/9976http://dx.doi.org/10.34657/9014One 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.enghttps://creativecommons.org/licenses/by/4.0/500cobalthydrogenmonomerporphyrinprototype two dimensional polymerArticle