A Two-Dimensional Polyimide-Graphene Heterostructure with Ultra-fast Interlayer Charge Transfer
Liu K, Li J, Qi H, Hambsch M, Rawle J, Vazquez AR, Nia AS, Pashkin A, Schneider H, Polozij M, Heine T, Helm M, Mannsfeld SCB, Kaiser U, Dong R, Feng X (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 60
Pages Range: 13859-13864
Journal Issue: 25
Abstract
Two-dimensional polymers (2DPs) are a class of atomically/molecularly thin crystalline organic 2D materials. They are intriguing candidates for the development of unprecedented organic–inorganic 2D van der Waals heterostructures (vdWHs) with exotic physicochemical properties. In this work, we demonstrate the on-water surface synthesis of large-area (cm2), monolayer 2D polyimide (2DPI) with 3.1-nm lattice. Such 2DPI comprises metal-free porphyrin and perylene units linked by imide bonds. We further achieve a scalable synthesis of 2DPI-graphene (2DPI-G) vdWHs via a face-to-face co-assembly of graphene and 2DPI on the water surface. Remarkably, femtosecond transient absorption spectroscopy reveals an ultra-fast interlayer charge transfer (ca. 60 fs) in the resultant 2DPI-G vdWH upon protonation by acid, which is equivalent to that of the fastest reports among inorganic 2D vdWHs. Such large interlayer electronic coupling is ascribed to the interlayer cation–π interaction between 2DP and graphene.
Involved external institutions
Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
Germany (DE)
Technische Universität Dresden
Germany (DE)
Universität Ulm
Germany (DE)
Diamond Light Source
United Kingdom (GB)
Germany (DE)
Technische Universität Dresden
Germany (DE)
Universität Ulm
Germany (DE)
Diamond Light Source
United Kingdom (GB)
How to cite
APA:
Liu, K., Li, J., Qi, H., Hambsch, M., Rawle, J., Vazquez, A.R.,... Feng, X. (2021). A Two-Dimensional Polyimide-Graphene Heterostructure with Ultra-fast Interlayer Charge Transfer. Angewandte Chemie International Edition, 60(25), 13859-13864. https://doi.org/10.1002/anie.202102984
MLA:
Liu, Kejun, et al. "A Two-Dimensional Polyimide-Graphene Heterostructure with Ultra-fast Interlayer Charge Transfer." Angewandte Chemie International Edition 60.25 (2021): 13859-13864.
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