A Curved Graphene Nanoribbon with Multi-Edge Structure and High Intrinsic Charge Carrier Mobility | Zendy

Wenhui Niu | Zendy; Ji Ma | Zendy; Paniz Soltani | Zendy; Wenhao Zheng | Zendy; Fupin Liu | Zendy; Alexey A. Popov | Zendy; Jan J. Weigand | Zendy; Hartmut Komber | Zendy; Emanuele Poliani | Zendy; Cinzia Casiraghi | Zendy; Jörn Droste | Zendy; Michael Ryan Hansen | Zendy; Silvio Osella | Zendy; David Beljonne | Zendy; Mischa Bonn | Zendy; Hai I. Wang | Zendy; Xinliang Feng | Zendy; Junzhi Liu | Zendy; Yiyong Mai | Zendy

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A Curved Graphene Nanoribbon with Multi-Edge Structure and High Intrinsic Charge Carrier Mobility

Author(s) -

Wenhui Niu,

Ji Ma,

Paniz Soltani,

Wenhao Zheng,

Fupin Liu,

Alexey A. Popov,

Jan J. Weigand,

Hartmut Komber,

Emanuele Poliani,

Cinzia Casiraghi,

Jörn Droste,

Michael Ryan Hansen,

Silvio Osella,

David Beljonne,

Mischa Bonn,

Hai I. Wang,

Xinliang Feng,

Junzhi Liu,

Yiyong Mai

Publication year - 2020

Publication title -

journal of the american chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 7.115

H-Index - 612

eISSN - 1520-5126

pISSN - 0002-7863

DOI - 10.1021/jacs.0c07013

Subject(s) - chemistry , graphene , charge (physics) , enhanced data rates for gsm evolution , charge carrier , electron mobility , chemical physics , nanotechnology , condensed matter physics , optoelectronics , quantum mechanics , telecommunications , physics , materials science , computer science

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 ∼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 cm 2 V -1 s -1 for photogenerated charge carriers in cGNR .

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