Tuning the morphology of chevron-type graphene nanoribbons by choice of annealing temperature

Cao Y, Qi J, Zhang YF, Huang L, Zheng Q, Lin X, Cheng Z, Zhang YY, Feng X, Du S, Pantelides ST, Gao HJ (2018)

Publication Type: Journal article

Publication year: 2018

Journal

Nano Research

Book Volume: 11

Pages Range: 6190-6196

Journal Issue: 12

DOI: 10.1007/s12274-018-2136-3

Abstract

Bottom-up synthesis of graphene nanoribbons (GNRs) by surface-assisted polymerization and cyclodehydrogenation of specifically designed precursor monomers has been shown to yield precise edges and doping. Here we use a precursor monomer containing sulfur atoms to fabricate nanostructures on a Au(111) surface at different annealing temperatures. The nanostructures have distinct configurations, varying from sulfur-doped polymers to sulfur-doped chevron-type GNRs (CGNRs) and, finally, pristine graphene nanoribbons with specific edges of periodic five-member carbon rings. Non-contact atomic force microscopy provides clear evidence for the cleavage of C–S bonds and formation of pristine CGNRs at elevated annealing temperatures. First-principles calculations show that the CGNRs exhibit negative differential resistance. [Figure not available: see fulltext.].

Involved external institutions

Chinese Academy of Sciences (CAS) / 中国科学院 CN China (CN) Renmin University of China CN China (CN) Technische Universität Dresden DE Germany (DE)

How to cite

APA:

Cao, Y., Qi, J., Zhang, Y.-F., Huang, L., Zheng, Q., Lin, X.,... Gao, H.-J. (2018). Tuning the morphology of chevron-type graphene nanoribbons by choice of annealing temperature. Nano Research, 11(12), 6190-6196. https://doi.org/10.1007/s12274-018-2136-3

MLA:

Cao, Yun, et al. "Tuning the morphology of chevron-type graphene nanoribbons by choice of annealing temperature." Nano Research 11.12 (2018): 6190-6196.

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