Synthesis of Nonplanar Graphene Nanoribbon with Fjord Edges

Overview

Journal J Am Chem Soc

Publisher American Chemical Society

Specialty Chemistry

Date 2021 Apr 7

PMID 33825484

Citations 14

Authors

Xuelin Yao

Wenhao Zheng

Silvio Osella

Zijie Qiu

Shuai Fu

Dieter Schollmeyer

Beate Muller

David Beljonne

Mischa Bonn

Hai I Wang

Klaus Mullen

Akimitsu Narita

Affiliations

Soon will be listed here.

Abstract

As a new family of semiconductors, graphene nanoribbons (GNRs), nanometer-wide strips of graphene, have appeared as promising candidates for next-generation nanoelectronics. Out-of-plane deformation of π-frames in GNRs brings further opportunities for optical and electronic property tuning. Here we demonstrate a novel fjord-edged GNR () with a nonplanar geometry obtained by regioselective cyclodehydrogenation. Triphenanthro-fused teropyrene and pentaphenanthro-fused quateropyrene were synthesized as model compounds, and single-crystal X-ray analysis revealed their helically twisted conformations arising from the [5]helicene substructures. The structures and photophysical properties of were investigated by mass spectrometry and UV-vis, FT-IR, terahertz, and Raman spectroscopic analyses combined with theoretical calculations.

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