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However, when a chiral monomer (the \u201csergeant\u201d) is introduced as a minor component in these assemblies composed of a majority of achiral monomers (the \u201csoldiers\u201d), it is not clear how the aggregation changes the ability of the sergeant to induce a preferential helicity to the polymer main chain (the so\u2010called \u201csergeants\u2010and\u2010soldiers\u201d effect). This study reports a detailed investigation of the influence of [Cu(OAc)\n                    <jats:sub>2<\/jats:sub>\n                    \u22c5H\n                    <jats:sub>2<\/jats:sub>\n                    O] coordination on the structure and chiroptical properties of helical hydrogen\u2010bonded co\u2010assemblies composed of a catalytically\u2010active benzene\u20101,3,5\u2010tricarboxamide (BTA) monomer, acting as the \u201csoldier\u201d, and an enantiopure BTA monomer derived from cyclohexylalanine, playing the role of the \u201csergeant\u201d. The copper actually significantly influences the extent of the \u201csergeants\u2010and\u2010soldiers\u201d effect since it acts as a crosslink that induces some chiral defects in the supramolecular helices. These crosslinks appear to be preserved during the catalytic hydrosilylation of 4\u2010nitroacetophenone. The aggregation of helices through the formation of copper crosslinks is reversible since homochiral single helices are exclusively formed in the case of sergeant\u2010rich assemblies. The fact that both main chain and side chain aggregation affects the chiroptical properties of supramolecular helices must be considered in the design of elaborated chiral materials.\n                  <\/jats:p>","DOI":"10.1002\/chem.202300189","type":"journal-article","created":{"date-parts":[[2023,2,23]],"date-time":"2023-02-23T10:54:37Z","timestamp":1677149677000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Rationalizing the Extent of the \u201cSergeants\u2010and\u2010Soldiers\u201d Effect in Supramolecular Helical Catalysts: Effect of Copper Coordination"],"prefix":"10.1002","volume":"29","author":[{"given":"Ahmad","family":"Hammoud","sequence":"first","affiliation":[{"name":"Sorbonne Universit\u00e9, CNRS Institut Parisien de Chimie Mol\u00e9culaire Equipe Chimie des Polym\u00e8res  4 Place Jussieu 75005 Paris 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