Synthetic Route of 2752-17-2, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, 2752-17-2, Name is 2,2′-Oxydiethanamine, SMILES is NCCOCCN, belongs to ethers-buliding-blocks compound. In a article, author is Yuan, Diao, introduce new discover of the category.
Enhanced performance of proton-conducting poly(arylene ether sulfone)s via multiple alkylsulfonated side-chains and block copolymer structures
A novel difluoro aromatic monomer DFTMTE is prepared, which contains five pendant ionizable methoxy and crosslinkable ethanedione groups. Block copolymers are developed via block copolycondensation of the monomers DFTMTE, 4,4′-difluorodiphenyl sulfone and 4,4′-diphenol. Sulfonated block ionomers are obtained via the following demethylation and nucleophilic substitution of the copolymers. The ionomer membranes with ion exchange capacity (IEC) of 1.80-2.16 mequiv. g(-1) display high conductivity of 234-319 mS cm(-1) at 80 degrees C and large maximum power density of 1730-2140 mW cm(-2), which is obviously larger than Nafion 212 (117 mS cm(-1) and 1350 mW cm(-2)) in the same condition. Their enhanced performances are attributed to excellent microphase separations caused by block copolymer structures and multiple sulfonated side-chains integrating both rigid aromatic and flexible aliphatic units. Meanwhile, crosslinking further improves the balance among the properties of the membranes. For example, CB1SP having IEC of 1.80 mequiv. g(-1) displays high comprehensive performance because of DFTMTE units and crosslinking structures, wherein low membrane swelling below 15% at 80 degrees C, large conductivity of 234 mS cm(-1), high maximum power density of 1730 mW cm(-2) and good stability of the membrane electrolyte assembly indicate a high potential in the application of fuel cell.
Synthetic Route of 2752-17-2, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 2752-17-2.