Tuning the reactivity and efficiency of copper catalysts for atom transfer radical polymerization by synthetic modification of tris(2-methylpyridyl)amine
| Autor: | CARMO DOS SANTOS, NADIA ALESSANDRA, Lorandi, Francesca, Badetti, Elena, Wurst, Klaus, Isse, Abdirisak Ahmed, Gennaro, Armando, Licini, GIULIA MARINA, Zonta, Cristiano, AHMED ISSE, Abdirisak |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Polymers and Plastics
Dispersity chemistry.chemical_element 02 engineering and technology 010402 general chemistry Photochemistry Atom transfer radical polymerization Catalyst activity tuning Controlled aqueous polymerizations Electrochemically mediated polymerization Tris(2-methylpyridyl)amine ligand Organic Chemistry 01 natural sciences Catalysis chemistry.chemical_compound Polymer chemistry Materials Chemistry Reactivity (chemistry) Reversible addition−fragmentation chain-transfer polymerization Settore CHIM/01 - Chimica Analitica Chemistry Atom-transfer radical-polymerization Settore CHIM/06 - Chimica Organica 021001 nanoscience & nanotechnology Copper 0104 chemical sciences Monomer Amine gas treating 0210 nano-technology |
| Popis: | Copper complexes bearing ligands based on tris(2-methylpyridyl)amine (TPMA) are leading catalysts in atom transfer radical polymerization (ATRP). In recent years, the TPMA structure has been finely modified to enhance the catalytic activity of the corresponding Cu complex. In this study, we report the synthesis of eight novel copper TPMA complexes, and the evaluation of the catalytic activity for electrochemically mediated ATRP in both organic and aqueous media. The TPMA skeleton was modified by inserting differently m-functionalised phenyl substituents. Complete characterizations and electrochemical investigations were performed to define the structural and redox properties of the new complexes and compare them to the archetype Cu/TPMA. Well-controlled polymerizations of some hydrophobic, hydrophilic and acidic monomers are presented, with conversions > 80%, low dispersity and predetermined molecular weights, thus confirming that these compounds are suitable ATRP catalysts for different systems. |
| Databáze: | OpenAIRE |
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