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Highly Crystalline and Semiconducting Imine-Based Two-Dimensional Polymers Enabled by Interfacial Synthesis |
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| Authors: | Hafeesudeen Sahabudeen Dr Haoyuan Qi Marco Ballabio Dr Miroslav Položij Dr Selina Olthof Rishi Shivhare Dr Yu Jing SangWook Park Kejun Liu Dr Tao Zhang Ji Ma Dr Bernd Rellinghaus Prof Dr Stefan Mannsfeld Prof Dr Thomas Heine Prof Dr Mischa Bonn Prof Dr Enrique Cánovas Prof Dr Zhikun Zheng Prof Dr Ute Kaiser Dr Renhao Dong Prof Dr Xinliang Feng |
| Institution: | 1. Faculty of Chemistry and Food Chemistry, Center for Advancing Electronics Dresden, Technische Universität Dresden, 01062 Dresden, Germany
These authors contributed equally to this work.;2. Faculty of Chemistry and Food Chemistry, Center for Advancing Electronics Dresden, Technische Universität Dresden, 01062 Dresden, Germany Central Facility of Electron Microscopy, Electron Microscopy Group of Materials Science, Universität Ulm, 89081 Ulm, Germany These authors contributed equally to this work.;3. Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany;4. Faculty of Chemistry and Food Chemistry, Center for Advancing Electronics Dresden, Technische Universität Dresden, 01062 Dresden, Germany;5. Department of Chemistry, University of Cologne, Luxemburger Str. 116, 50939 Cologne, Germany;6. College of Chemical Engineering, Nanjing Forestry University, Nanjing, China;7. IFW Dresden, Institute for Metallic Materials, 01171 Dresden, Germany Dresden Center for Nanoanalysis (DCN), cfaed, Technische Universität Dresden, 01062 Dresden, Germany;8. Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA Nanociencia), Faraday 9, 28049 Madrid, Spain;9. Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275 China;10. Central Facility of Electron Microscopy, Electron Microscopy Group of Materials Science, Universität Ulm, 89081 Ulm, Germany |
| Abstract: | Single-layer and multi-layer 2D polyimine films have been achieved through interfacial synthesis methods. However, it remains a great challenge to achieve the maximum degree of crystallinity in the 2D polyimines, which largely limits the long-range transport properties. Here we employ a surfactant-monolayer-assisted interfacial synthesis (SMAIS) method for the successful preparation of porphyrin and triazine containing polyimine-based 2D polymer (PI-2DP) films with square and hexagonal lattices, respectively. The synthetic PI-2DP films are featured with polycrystalline multilayers with tunable thickness from 6 to 200 nm and large crystalline domains (100–150 nm in size). Intrigued by high crystallinity and the presence of electroactive porphyrin moieties, the optoelectronic properties of PI-2DP are investigated by time-resolved terahertz spectroscopy. Typically, the porphyrin-based PI-2DP 1 film exhibits a p-type semiconductor behavior with a band gap of 1.38 eV and hole mobility as high as 0.01 cm2 V−1 s−1, superior to the previously reported polyimine based materials. |
| Keywords: | 2D-Polymere Imin-basierte COFs Grenzflächensynthese Photoleitfähigkeit Halbleiter |