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Toward Zigzag‐edged Helical Nanographene Based on [7]Helicene
Author(s) -
Rong MingGuang,
Wang Junting,
Liu Junzhi
Publication year - 2021
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.202100192
Subject(s) - helicene , zigzag , materials science , crystallography , cyclic voltammetry , density functional theory , nanotechnology , electrochemistry , chemistry , molecule , computational chemistry , organic chemistry , electrode , geometry , mathematics
Due to their unique chemical and physical properties, zigzag‐edged nanographenes have attracted increasing interest in recent years. Herein, a novel zigzag‐edged nanographene ( 6 ) containing a [7]helicene subunit was designed and synthesized. However, because of the high reactivities of zigzag edges, compound 1 with a diketone structure was obtained owing to the oxidation of 6 . The helical carbon skeleton of 1 is unambiguously revealed by single‐crystal X‐ray crystallography analysis. The photophysical properties of the precursor and helical diketone 1 are studied by UV‐vis absorption spectroscopy. The electrochemical property of 1 is investigated by cyclic voltammetry, which was further studied by density functional theory (DFT) calculations (Δ E g Cal =2.94 eV). The work reported here not only represents the synthesis of an unprecedented [7]helicene‐embedded nanographene, but also provides the possibility for the synthesis of helical nanographenes with rich zigzag edges.