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Two hypercross-linked polymer networks have been synthesized by the self-condensation of bishydroxymethyl monomer, 1,4-benzenedimethanol (BDM), and monohydroxymethyl compound, benzyl alcohol (BA). This is different from the previous reports where multifunctional monomers or cross-linkers are crucial for constructing the porous polymer networks. N2 sorption isotherms for the polymers show that both materials are predominantly microporous with Brunauer–Emmett–Teller (BET) surface areas of 847 m2 g−1 for HCP–BDM and 742 m2 g−1 for HCP–BA. A network based on BA can also store a significant amount of CO2 (8.46 wt%) and H2 (0.97 wt%) at 1.0 bar, and at 273 K and 77 K respectively, despite its relatively modest surface area. Based on these results, this study opens up the possibility of synthesizing porous materials using monofunctional monomers.
Luo et al. (Tue,) studied this question.