期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 142, 期 43, 页码 18293-18298出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.0c07013
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资金
- National Natural Science Foundation of China [21774076, 52073173]
- Program of Shanghai Academic Research Leader [19XD1421700]
- Deutsche Forschungsgemeinschaft (DFG) [SFB 858]
- European Union's Horizon 2020 [881603, 813036]
- ERC Grant T2DCP
- German DFG (Cluster of Excellence Center for Advancing Electronics Dresden (cfaed))
- German DFG (EnhanceNano) [391979941]
- Federal State of Saxony (ESFProject GRAPHD, TU Dresden)
- University of Hong Kong
- ITC
- ERC Grant NOC2D
- European Social Fund
Structurally well-defined graphene nanoribbons (GNRs) have emerged as highly promising materials for the next-generation nanoelectronics. The electronic properties of GNRs critically depend on their edge topologies. Here, we demonstrate the efficient synthesis of a curved GNR (cGNR) with a combined cove, zigzag, and armchair edge structure, through bottom-up synthesis. The curvature of the cGNR is elucidated by the corresponding model compounds tetrabenzo[a,cd,j,lm]perylene (1) and diphenanthrene-fused tetrabenzo[a,cd,j,lm]perylene (2), the structures of which are unambiguously confirmed by the X-ray single-crystal analysis. The resultant multi-edged cGNR exhibits a well-resolved absorption at the near-infrared (NIR) region with a maximum peak at 850 nm, corresponding to a narrow optical energy gap of similar to 1.22 eV. Employing THz spectroscopy, we disclose a long scattering time of similar to 60 fs, corresponding to a record intrinsic charge carrier mobility of similar to 600 cm(2) V-1 s(-1) for photogenerated charge carriers in cGNR.
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