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New functionalized porous polyimides (PPIs-NO2, PPIs-NH2, and PPIs-NPy) were synthesized and\udcharacterized and the PPI-NPy materials were applied as supports to obtain heterogenized palladium complexes (PPI-NPy-Pd). The PPI-NPy-Pd hybrid materials have behaved as very efficient heterogeneous catalysts in the Suzuki coupling reaction in water, affording the corresponding cross-coupling products in excellent yields. Furthermore, the catalysts have shown excellent chemical and thermal stability and good recyclability. No evidence of the leaching of Pd from the catalyst during the course of reaction was observed, suggesting true heterogeneity in our catalytic systems.The financial support provided by the Spanish Ministerio de Economía y Competitividad (Project MAT2010-20668, MAT2011-29020-C02-02 and Consolider-Ingenio 2010-(CSD-0050-MULTICAT) is gratefully acknowledged. A predoctoral JAE fellowship from the Consejo Superior de Investigaciones Científicas (CSIC) to E. Rangel is also acknowledged.Peer Reviewe

Palladium-heterogenized porous polyimide materials as effective and recyclable catalysts for reactions in water