title: Wafer-sized multifunctional polyimine-based two-dimensional conjugated polymers with high mechanical stiffness.
abstract: 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.
authors.affiliation: Center for Advancing Electronics Dresden (cfaed) and Department of Chemistry and Food Chemistry, Dresden University of Technology, Mommsenstraße 4, 01062 Dresden, Germany.
authors.forename: Hafeesudeen
authors.initials: H
authors.lastname: Sahabudeen
authors.affiliation: Central Facility for Electron Microscopy, Department of Electron microscopy of Material Science, University of Ulm, 89081 Ulm, Germany.
authors.forename: Haoyuan
authors.identifier: 0000-0002-6684-7074
authors.initials: H
authors.lastname: Qi
authors.affiliation: Leibniz-Institut für Polymerforschung Dresden e.V., Institute of Physical Chemistry and Polymer Physics, Department of polymer interface, Hohe Straße 6, 01069 Dresden, Germany.
authors.forename: Bernhard Alexander
authors.initials: BA
authors.lastname: Glatz
authors.affiliation: Department of Theoretische Chemie, Dresden University of Technology, Bergstraße 66b, 01062 Dresden, Germany.
authors.forename: Diana
authors.initials: D
authors.lastname: Tranca
authors.affiliation: Center for Advancing Electronics Dresden (cfaed) and Department of Chemistry and Food Chemistry, Dresden University of Technology, Mommsenstraße 4, 01062 Dresden, Germany.
authors.forename: Renhao
authors.initials: R
authors.lastname: Dong
authors.affiliation: Center for Advancing Electronics Dresden (cfaed) and Department of Chemistry and Food Chemistry, Dresden University of Technology, Mommsenstraße 4, 01062 Dresden, Germany.
authors.forename: Yang
authors.initials: Y
authors.lastname: Hou
authors.affiliation: Center for Advancing Electronics Dresden (cfaed) and Department of Chemistry and Food Chemistry, Dresden University of Technology, Mommsenstraße 4, 01062 Dresden, Germany.
authors.forename: Tao
authors.initials: T
authors.lastname: Zhang
authors.affiliation: Leibniz-Institut für Polymerforschung Dresden e.V., Institute of Physical Chemistry and Polymer Physics, Department of polymer interface, Hohe Straße 6, 01069 Dresden, Germany.
authors.forename: Christian
authors.identifier: 0000-0002-4093-7469
authors.initials: C
authors.lastname: Kuttner
authors.affiliation: Central Facility for Electron Microscopy, Department of Electron microscopy of Material Science, University of Ulm, 89081 Ulm, Germany.
authors.forename: Tibor
authors.initials: T
authors.lastname: Lehnert
authors.affiliation: Department of Theoretische Chemie, Dresden University of Technology, Bergstraße 66b, 01062 Dresden, Germany.
authors.forename: Gotthard
authors.initials: G
authors.lastname: Seifert
authors.affiliation: Central Facility for Electron Microscopy, Department of Electron microscopy of Material Science, University of Ulm, 89081 Ulm, Germany.
authors.forename: Ute
authors.initials: U
authors.lastname: Kaiser
authors.affiliation: Center for Advancing Electronics Dresden (cfaed) and Department of Chemistry and Food Chemistry, Dresden University of Technology, Mommsenstraße 4, 01062 Dresden, Germany.|Leibniz-Institut für Polymerforschung Dresden e.V., Institute of Physical Chemistry and Polymer Physics, Department of polymer interface, Hohe Straße 6, 01069 Dresden, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Fery
authors.affiliation: Center for Advancing Electronics Dresden (cfaed) and Department of Chemistry and Food Chemistry, Dresden University of Technology, Mommsenstraße 4, 01062 Dresden, Germany.
authors.forename: Zhikun
authors.initials: Z
authors.lastname: Zheng
authors.affiliation: Center for Advancing Electronics Dresden (cfaed) and Department of Chemistry and Food Chemistry, Dresden University of Technology, Mommsenstraße 4, 01062 Dresden, Germany.
authors.forename: Xinliang
authors.initials: X
authors.lastname: Feng