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Loading Linear Arrays of Cu II Inside Aromatic Amide Helices
Author(s) -
Wang Jinhua,
Wicher Barbara,
MéndezArdoy Alejandro,
Li Xuesong,
Pecastaings Gilles,
Buffeteau Thierry,
Bassani Dario M.,
Maurizot Victor,
Huc Ivan
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202104734
Subject(s) - chemistry , deprotonation , amide , intramolecular force , crystallography , metal , ion , metal ions in aqueous solution , stereochemistry , cyclic voltammetry , electrochemistry , organic chemistry , electrode
Abstract The very stable helices of 8‐amino‐2‐quinolinecarboxylic acid oligoamides are shown to uptake Cu II ions in their cavity through deprotonation of their amide functions with minimal alteration of their shape, unlike most metallo‐organic structures which generally differ from their organic precursors. The outcome is the formation of intramolecular linear arrays of a defined number of Cu II centers (up to sixteen in this study) at a 3 Å distance, forming a molecular mimic of a metal wire completely surrounded by an organic sheath. The helices pack in the solid state so that the arrays of Cu II extend intermolecularly. Conductive‐AFM and cyclic voltammetry suggest that electrons are transported throughout the metal‐loaded helices in contrast with hole transport observed for analogous foldamers devoid of metal ions.