Synthesis and Characterization of [2.2]Paracyclophane-Containing Conjugated Microporous Polymers

Conjugated microporous polymers (CMPs) are prepared from disubstituted and tetrasubstituted [2.2]paracyclophane monomers by a SonogashiraHagihara coupling. The polymers obtained exhibit a type I nitrogen gas adsorption profile and H4-like hysteresis loops, indicating that the [2.2]paracyclophane-containing CMPs possess slit-like mesopores. Their BrunauerEmmettTeller surface areas are estimated to be above 500 m2 g-1. The step and stacked structure of the [2.2]paracyclophane unit affects the morphology of the polymers because of the contribution of two-dimensional expansion of the polymer network.