Details

Autor(en) / Beteiligte

• Discekici, Emre H
• Anastasaki, Athina
• Kaminker, Revital
• Willenbacher, Johannes
• Truong, Nghia P
• Fleischmann, Carolin
• Oschmann, Bernd
• Lunn, David J
• Read de Alaniz, Javier
• Davis, Thomas P
• Bates, Christopher M
• Hawker, Craig J

Titel

Light-Mediated Atom Transfer Radical Polymerization of Semi-Fluorinated (Meth)acrylates: Facile Access to Functional Materials

Ist Teil von

• Journal of the American Chemical Society, 2017-04, Vol.139 (16), p.5939-5945

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2017

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A highly efficient photomediated atom transfer radical polymerization protocol is reported for semi-fluorinated acrylates and methacrylates. Use of the commercially available solvent, 2-trifluoromethyl-2-propanol, optimally balances monomer, polymer, and catalyst solubility while eliminating transesterification as a detrimental side reaction. In the presence of UV irradiation and ppm concentrations of copper­(II) bromide and Me6-TREN (TREN = tris­(2-aminoethyl amine)), semi-fluorinated monomers with side chains containing between three and 21 fluorine atoms readily polymerize under controlled conditions. The resulting polymers exhibit narrow molar mass distributions ( Đ ≈ 1.1) and high end group fidelity, even at conversions greater than 95%. This level of control permits the in situ generation of chain-end functional homopolymers and diblock copolymers, providing facile access to semi-fluorinated macromolecules using a single methodology with unprecedented monomer scope. The results disclosed herein should create opportunities across a variety of fields that exploit fluorine-containing polymers for tailored bulk, interfacial, and solution properties.