Author, as appears in the article.: Maurya DS; Malik A; Feng X; Bensabeh N; Lligadas G; Percec V
Department: Química Analítica i Química Orgànica
URV's Author/s: Lligadas Puig, Gerard
Keywords: Single-electron-transfer Pd catalyst Methyl acrylate Living radical polymerization Heteroaryl mesylates Cu(0) Complete conversion Chain-end functionality Biphasic mixtures Aryl mesylates
Abstract: A mixed-ligand effect was observed for mixtures of tris(2-dimethylaminoethyl)amine (Me6-TREN) with tris(2-aminoethyl)amine (TREN) ligands during Cu(0) wire-catalyzed, single-electron transfer-living radical polymerization (SET-LRP) of methyl acrylate (MA) initiated with bis(2-bromopropionyl)ethane (BPE) in DMSO. The external order of reaction of SET-LRP both in the presence of Me6-TREN, TREN and of the mixed-ligand Me6-TREN/TREN, in DMSO, demonstrated a catalytic activity for DMSO similar to that reported in the presence of Cu(0) powder. The catalytic activity of DMSO, with close to 100% chain-end functionality, facilitates the much less expensive TREN to act as a very efficient ligand that is competitive with Me6-TREN and with the mixed-ligand and revitalizes TREN into an excellent ligand. The highest activity of the mixed-ligand at 1/1 ratio between ligands suggests that in addition to a fast exchange between these two ligands, a new single dynamic ligand stabilized by hydrogen-bonding, may generate these results.
Thematic Areas: Química Polymers and plastics Polymer science Medicina ii Materials chemistry Materiais Interdisciplinar Farmacia Engenharias iv Engenharias ii Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências agrárias i Ciência de alimentos Chemistry, organic Biotecnología Biomaterials Bioengineering Biochemistry & molecular biology Astronomia / física
licence for use: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 1525-7797
Author's mail: gerard.lligadas@urv.cat
Author identifier: 0000-0002-8519-1840
Last page: 1919
Record's date: 2023-02-26
Journal volume: 21
Papper version: info:eu-repo/semantics/acceptedVersion
Papper original source: Biomacromolecules. 21 (5): 1902-1919
APA: Maurya DS; Malik A; Feng X; Bensabeh N; Lligadas G; Percec V (2020). Me6-TREN/TREN Mixed-Ligand Effect During SET-LRP in the Catalytically Active DMSO Revitalizes TREN into an Excellent Ligand. Biomacromolecules, 21(5), 1902-1919. DOI: 10.1021/acs.biomac.9b01765
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Entity: Universitat Rovira i Virgili
Journal publication year: 2020
First page: 1902
Publication Type: Journal Publications
Repositori URV