A CuI‐Based Metallo‐Supramolecular Gel‐Like Material Built from a Library of ­Oligomeric Ligands Featuring Exotopic 1, 10‐Phenanthroline Units. Issue 34 (29th October 2015)

• Record Type: Journal Article
• Authors: Berrocal, José Augusto; Albano, Simone; Mandolini, Luigi; Di Stefano, Stefano
• Is Part Of: European journal of organic chemistry. Issue 34(2015)
• Page Start: 7504
• Page End: 7510
• Publication Date: 2015-10-29
• Subjects: Macrocyclic ligands -- Gels -- Metathesis -- Dynamic covalent chemistry -- Copper; Chemistry, Organic -- Periodicals; Organic compounds -- Synthesis -- Periodicals; Bioorganic chemistry -- Periodicals; Chemistry, Physical organic -- Periodicals; 547
• DOI: 10.1002/ejoc.201501201
• Languages: English
• ISSNs: 1434-193X

Abstract

Abstract: A 22‐membered cyclic alkeneC1 incorporating an exotopic 1, 10‐phenanthroline nucleus in the ring skeleton has been synthesized and subjected to ring‐opening metathesis polymerization (ROMP) in dilute dichloromethane solution at varying monomer concentrations ( c mon ). The resultant libraries of macrocyclic oligomers were used as ligands for the generation of main‐chain metal–ligand oligomeric/polymeric complexes taking advantage of the strong affinity of 1, 10‐phenanthroline derivatives for Cu I . The formation of a gel‐like material only upon addition of [Cu(CH3 CN)4 ]PF6 to the most concentrated library ( c mon = 60 mM ) was explained as arising from the presence of significant amounts of trimeric and higher oligomeric macrocyclesC i ( i ≥ 3), acting as cross‐linking components. Abstract : A gel‐like material has been obtained by exo coordination of Cu I to the phenanthroline moieties of a library of multitopic cyclic ligands.