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Helically Coiled Graphene Nanoribbons
Author(s) -
Daigle Maxime,
Miao Dandan,
Lucotti Andrea,
Tommasini Matteo,
Morin JeanFrançois
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201611834
Subject(s) - graphene nanoribbons , materials science , graphene , nanotechnology
Graphene is a zero‐gap, semiconducting 2D material that exhibits outstanding charge‐transport properties. One way to open a band gap and make graphene useful as a semiconducting material is to confine the electron delocalization in one dimension through the preparation of graphene nanoribbons (GNR). Although several methods have been reported so far, solution‐phase, bottom‐up synthesis is the most promising in terms of structural precision and large‐scale production. Herein, we report the synthesis of a well‐defined, helically coiled GNR from a polychlorinated poly( m ‐phenylene) through a regioselective photochemical cyclodehydrochlorination (CDHC) reaction. The structure of the helical GNR was confirmed by 1 H NMR, FT‐IR, XPS, TEM, and Raman spectroscopy. This Riemann surface‐like GNR has a band gap of 2.15 eV and is highly emissive in the visible region, both in solution and the solid state.