Synthesis and ATRP of novel fluorinated aromatic monomer with pendant sulfonate group
摘要:
Novel, fluorinated monomer with pendant sulfonate group was synthesized utilizing a two-step derivatization of 2,3,4,5,6-pentafluorostyrene (FS). The first step was a nucleophilic substitution of the fluorine atom in para position by hydroxyl group followed by sulfopropylation. The monomer was polymerized under aqueous ATRP conditions to yield phenyl-fluorinated aromatic homopolymer bearing pendant sulfonates on each repeating unit. Furthermore, this polymer was used as macroinitiator for the ATRP of poly(ethylene glycol) methacrylate. The polymers were characterized by H-1 NMR, SEC and FTIR analyses. Their thermal properties were evaluated by differential scanning calorimetry and thermal gravimetric analyses. (C) 2013 Elsevier B.V. All rights reserved.
Particles suitable for catalyzing oxygen reduction or hydrogen oxidation and being proton-conducting by grafting specific proton-conducting fluorinated polymers to the surface thereof
申请人:COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
公开号:US11390702B2
公开(公告)日:2022-07-19
Proton-conducting, fluorinated polymer grafted particles for use in the preparation of catalytic layers for fuel cells, such as H2/air cells or H2/O2 cells. The grafted particles include a particle made of a material for catalyzing oxygen reduction or hydrogen oxidation, such as a platinum particle, that has been grafted with a proton-conducting, fluorinated polymer graft. The proton-conducting, fluorinated polymer graft includes an organic spacer group, a single bond or an organic spacer group, a repeating unit resulting from polymerization of a fluorinated styrenic monomer, and a repeating unit resulting, from polymerization of a non-fluorinated styrenic monomer bearing at least one proton-conducting group.
PROCÉDÉ DE PRÉPARATION DE PARTICULES APTES A CATALYSER LA RÉDUCTION DE L'OXYGÈNE OU L'OXYDATION DE L'HYDROGÈNE CONDUCTRICES DE PROTONS PAR GREFFAGE A LEUR SURFACE DE POLYMÈRES FLUORES CONDUCTEURS DE PROTONS SPECIFIQUES
申请人:Commissariat à l'Énergie Atomique
et aux Énergies Alternatives
公开号:EP3501050A1
公开(公告)日:2019-06-26
METHOD FOR PREPARING PARTICLES SUITABLE FOR CATALYSING OXYGEN REDUCTION OR HYDROGEN OXIDATION, THE PARTICLES BEING PROTON-CONDUCTING BY GRAFTING SPECIFIC PROTON-CONDUCTING FLUORINATED POLYMERS TO THE SURFACE THEREOF
申请人:COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
公开号:US20190177461A1
公开(公告)日:2019-06-13
A method for preparing particles comprising a material suitable for catalysing oxygen reduction or hydrogen oxidation, the particles being grafted with grafts consisting of at least one specific polymer comprising at least one repeating fluorinated styrene unit bearing at least one proton-conducting group.
Synthesis and ATRP of novel fluorinated aromatic monomer with pendant sulfonate group
作者:Ivaylo Dimitrov、Katja Jankova、Søren Hvilsted
DOI:10.1016/j.jfluchem.2013.02.008
日期:2013.5
Novel, fluorinated monomer with pendant sulfonate group was synthesized utilizing a two-step derivatization of 2,3,4,5,6-pentafluorostyrene (FS). The first step was a nucleophilic substitution of the fluorine atom in para position by hydroxyl group followed by sulfopropylation. The monomer was polymerized under aqueous ATRP conditions to yield phenyl-fluorinated aromatic homopolymer bearing pendant sulfonates on each repeating unit. Furthermore, this polymer was used as macroinitiator for the ATRP of poly(ethylene glycol) methacrylate. The polymers were characterized by H-1 NMR, SEC and FTIR analyses. Their thermal properties were evaluated by differential scanning calorimetry and thermal gravimetric analyses. (C) 2013 Elsevier B.V. All rights reserved.