The effect of porogen sizes in hyper-cross-linked polymer via insitu removal of alkyl silyl templates by friedel-craft reaction
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초록
내용
Polymers with pores smaller than 2 nm have been called microporous polymers. The micropores could interact with the guest compound at the molecular level. These special properties have a high potential for separations, adsorbents, and heterogeneous catalysts. Hyper-cross-linking has been the facile method to induce micropores in polymers with aromatic rings. The introduction of regular micropore sizes or increase of microporosity could be done via cross-linker or addition of porogens in aromatic rings. However, the control of micropore sizes has been a challenge because the hyper-cross-linking occurs arbitrarily. Thus, we present a facile method to induce diverse micropore sizes by incorporating progens. The porogens could enlarge the space between polymer chains leading to changes of micropore sizes. Finally, the subsequent removal of progens during hyper-cross-linking reaction produces microporous polymers. The effect of porogens will be discussed along with the synthetic and pore characteristic details.