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Azobenzene-functionalized graphene nanoribbons: bottom-up synthesis, photoisomerization behaviour and self-assembled structures

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Abstract

Azobenzene-functionalized graphene nanoribbons (GNRs) were synthesized through acid promoted alkyne benzannulation. The resulting GNRs showed high dispersibility in common organic solvents (up to 100 mg mL−1 in chlorobenzene) and underwent fast photoisomerization. A photostationary state was established in solution upon 365 nm light irradiation for 20 s and subsequently the initial state could be easily restored upon 500 nm light irradiation for 40 s. Photo-responsive GNR thin films were also prepared by spin coating. Moreover, the azobenzene-functionalized GNRs could self-assemble into nanowires with lengths ranging from several to tens of micrometers. This study opens an avenue for the functionalization of GNRs with stimuli-responsive functional groups, which holds great promise for applications in optoelectronic devices.

Graphical abstract: Azobenzene-functionalized graphene nanoribbons: bottom-up synthesis, photoisomerization behaviour and self-assembled structures

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Article information


Submitted
30 Mar 2020
Accepted
27 Apr 2020
First published
27 Apr 2020

J. Mater. Chem. C, 2020, Advance Article
Article type
Paper

Azobenzene-functionalized graphene nanoribbons: bottom-up synthesis, photoisomerization behaviour and self-assembled structures

Z. Shangguan, C. Yu, C. Li, X. Huang, Y. Mai and T. Li, J. Mater. Chem. C, 2020, Advance Article , DOI: 10.1039/D0TC01609H

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