3,3 -disulfonated-4,4 -difluorodiphenyl

Zhao et al. synthesized a series of sulfonated poly(benzoxazole thioether sulfone)s (SPTESBO-XX) by varying the molar concentration of sulfonated monomer, disodium 3,3 -disulfonated-4,4 -difluorodiphenyl sulfone (SDCDPS) with 2,2 -bis[2-(4-fluorophenyl) benzoxazol-6-yl] hexa-fluoropropane (6BO) and 4,4 -thiobisbenzenethiol (TBBT) (Figure 5.68) [108]. They also prepared another series (SPTESBO-HFB-XX) by incorporating... 

FIGURE 4.3 Structure of (a) 3,3 -disulfonated 4,4 -dichlorodiphenyl sulfone, (b) 3,3 -disulfonated 4,4 -difluorodiphenyl ketone, and (c) l,4-bw(3-sodium sulfonated-4-fluorobenzoyl)benzene. 

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