A curved graphene nanoribbon with multi-edge structure and high intrinsic charge carrier mobility

Niu W, Ma J, Soltani P, Zheng W, Liu F, Popov AA, Weigand JJ, Komber H, Poliani E, Casiraghi C, Droste J, Hansen MR, Osella S, Beljonne D, Bonn M, Wang H, Feng X, Liu J, Mai Y (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Journal of the American Chemical Society American Chemical Society

Book Volume: 142

Pages Range: 18293-18298

Journal Issue: 43

DOI: 10.1021/jacs.0c07013

Abstract

Structurally well-defined graphene nanoribbons (GNRs) have emerged as highly promising materials for the nextgeneration 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 singlecrystal 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 ∼1.22 eV. Employing THz spectroscopy, we disclose a long scattering time of ∼60 fs, corresponding to a record intrinsic charge carrier mobility of ∼600 cm2 V-1 s-1 for photogenerated charge carriers in cGNR.

Involved external institutions

Technische Universität Dresden DE Germany (DE) Max-Planck-Institut für Polymerforschung (MPI-P) / Max Planck Institute for Polymer Research DE Germany (DE) Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden DE Germany (DE) Shanghai Jiao Tong University / 上海交通大学 CN China (CN) University of Manchester GB United Kingdom (GB) Westfälische Wilhelms-Universität (WWU) Münster DE Germany (DE) University of Mons / Université de Mons BE Belgium (BE) University of Warsaw / Uniwersytet Warszawski PL Poland (PL) Leibniz-Institut für Polymerforschung Dresden e. V. DE Germany (DE)

How to cite

APA:

Niu, W., Ma, J., Soltani, P., Zheng, W., Liu, F., Popov, A.A.,... Mai, Y. (2020). A curved graphene nanoribbon with multi-edge structure and high intrinsic charge carrier mobility. Journal of the American Chemical Society, 142(43), 18293-18298. https://doi.org/10.1021/jacs.0c07013

MLA:

Niu, Wenhui, et al. "A curved graphene nanoribbon with multi-edge structure and high intrinsic charge carrier mobility." Journal of the American Chemical Society 142.43 (2020): 18293-18298.

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