Abstract
The novel sulfonated poly(ether sulfone)s containing hexabenzocoronene moiety that is partial graphene structure were synthesized and characterized their properties. Graphene is an allotrope of carbon and one-atom-thick planar sheets of sp2-bonded carbon atoms that are densely packed in a honeycomb crystal lattice. Poly(arylene ether sulfone)s containing hexaphenyls on polymer backbone were synthesized by polycondensation and followed intra-cyclization by friedel-craft reaction with lewis acid (FeCl 3 ) to form partial graphene structure. The sulfonation was taken selectively on hexabenzocoronen units with concentrated sulfuric acid. The structure properties of the sulfonated polymers were investigated by 1H-NMR spectroscopy. The resulted ion exchange capacities (IEC) were 1.09∼1.61 meq./g. The water uptakes were 8.84∼15.27% at 30 °C and 18.27%∼42.38% at 80 °C with changing the ion exchange capacities. The S-PDHTPE membranes exhibit proton conductivities (80 °C, RH 90) of 78.3∼ 105.7 mS/cm compared with 106.2 mS/cm of Nafion 211®.
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