Microporous organic polymer networks with weakly coordinating cations in their backbone have been synthesised by metal catalysed C-C bond forming reactions. A functionalised tetraphenylphosphonium ion was synthesised and successfully used as a tecton in a co-polymerisation with tetrakis(4- bromophenyl) methane using nickel catalysed Yamamoto coupling and with triethynylbenzene in a palladium catalysed Songashira-Hagihara reaction. The microporous materials showed an apparent BET surface area of 1455 m² g^-1 and 540 m² g^-1, respectively. The Yamamoto product provide a CO₂ uptake of 2.49 mmol g^-1 at 273 K and 1 bar. After ion exchange with chloride CO₂ uptake is further increased to 2.85 mmol g^-1. This journal is