Sulfonated poly fluorenyl ether

Poly(diallyldimethylammonium chloride) (PDDA), poly(styrene sulfonic add, sodium salt) (PSS) Sulfonated poly(fluorenyl ether ketone) (SPFEK) and polyether sulfone (PES) co-electrospun fibers sandwiched with PES beaded nanofibers 0.06 (80 °C, 100 % RH), Ea = 1.30 KJ/mol [87]... 

FIG. 1.4 Sulfonated poly(fluorenyl ether ketone) (sPFEK). 

Chen, Y., Meng, Y., Wang, S., Tian, S., Chen, Y., Hay, A.S. (2006) Sulfonated poly (fluorenyl ether ketone) membrane prepared via direct polymerization for PEM fuel cell application. Journal of Membrane Science, 280, 433 141. 

D.Y. Chen, S.J. Wang, M. Xiao, D.M. Han and Y.Z. Meng, Synthesis of sulfonated poly(fluorenyl ether thioether ketonejswith bulky-block structure and its application in vanadium redox flow battery. Polymer 52,2011, 5312-5319. 

Tian, S. H., Shu, D Wang, S. Xiao, J. M., and Meng, Y. Z. (2010). Sulfonated Poly(Fluorenyl Ether Ketone Nitrile) Electrolyte Membrane with High Proton Conductivity and Low Water Uptake. Journal of Power Sources. 195 97-103. 

Sulfonated poly(arylene ether phosphine oxide)s with fluorenyl groups were synthesized to establish proton exchange membranes (Scheme 42). Triphenylphosphine oxide-based diamino (arylene ethers) were made available (Scheme 43) that were utilized in the synthesis of polyimides. ... 

Chen D, Hickner MA (2012) Degradation of imidazolium- and quaternary ammonium-functionalized poly(fluorenyl ether ketone sulfone) anion exchange membranes. ACS Appl Mater Interfaces. doi 10.1021/am301557w... 

The methanol permeability through the proton exchange membranes was proportional to the proton conductivities, as shown in Fig. 4.16. That is, the proton conductivity has a trade-off in its relationship with the methanol permeability. Target membrane would be located in the upper left-hand comer, of which the fluorenyl copolymers show the same tendency. Series of sulfonated poly(aryl ether ketone)s membranes obtained by direct copolymerization using various sulfonated monomers are listed in Table 4.2. The water content and proton conductivities of these membranes are shown in Fig. 4.17. 

Bae, B., Miyatake, K., and Watanabe, M. (2008) Sulfonated poly(arylene ether sulfone) ionomers containing fluorenyl groups for fuel cell applications, J. Membr. Sci., 310, 110-118. 

Based on the exciting results gained from sulfonated poly(arylene ether)s and poly(arylene imide)s containing fluorenyl groups as the proton exchange membranes, which demonstrated the effectiveness of the rigid and bulky fluorenyl groups on membrane performance, especially on the proton conductivity and... 

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