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Abstract: This presentation will focus on the ability of macroporous organic polymers (highly crosslinked, insoluble materials with a permanent pore structure) to host transition metal catalysts. These permanent pores allow solvents and substrates that might otherwise be "non-solvents" for the polymer support to access the interior sites. Strategies for supporting transition metal catalysts within these media and their application in biphasic catalysis will be discussed (e.g. fluorous/ organic, sc C02, aqueous/organic). Since these highly crosslinked materials have also been optimized for molecular imprinting, experiments to utilize associated chiral cavities as a strategy for controlling transition metal reaction selectivities will be discussed