An article Membrane properties of trisulfonated hydrophilic and partially fluorinated hydrophobic multiblock copolymer WOS:000663408600001 published article about POLY(ARYLENE ETHER SULFONE); PROTON-EXCHANGE MEMBRANES; POLYMER ELECTROLYTE MEMBRANE; RANDOM STATISTICAL COPOLYMERS; BLOCKS in [Rowlett, Jarrett R.; Shaver, Andrew T.; Mecham, Sue; Riffle, Judy S.; McGrath, James E.] Virginia Polytech Inst & State Univ, Dept Chem, Macromol & Interfaces Inst, Blacksburg, VA 24061 USA in 2021.0, Cited 33.0. Safety of Mequinol. The Name is Mequinol. Through research, I have a further understanding and discovery of 150-76-5
A multiblock copolymer with increased charge density in the hydrophilic phase was synthesized by utilizing a trisulfonated poly(arylene ether sulfone) backbone (SHQS100). To achieve a balance of membrane properties a partially fluorinated poly(arylene ether benzonitrile) hydrophobic phase (6FPAEB) was used in uneven block lengths to form the hydrophilic-hydrophobic multiblock copolymer. Multiblock copolymers were synthesized via nucleophilic aromatic substitution to achieve high molecular weight copolymers and corresponding ductile membranes. Combination of the shorter increased charge density hydrophilic phase and longer partially fluorinated hydrophobic phase resulted in superior proton conductivity and mechanical properties while limiting water uptake and swelling, despite high ion-exchange capacity. The trifunctional SHQSH hydrophilic phase is proposed to produce a more concentrated charge region in the hydrophilic phase, while swelling of the membrane was limited by a longer partially fluorinated hydrophobic phase.
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,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles