title: Porous-Hybrid Polymers as Platforms for Heterogeneous Photochemical Catalysis.
abstract: A number of permanently porous polymers containing Ru(bpy)n photosensitizer or a cobaloxime complex, as a proton-reduction catalyst, were constructed via one-pot Sonogashira-Hagihara (SH) cross-coupling reactions. This process required minimal workup to access porous platforms with control over the apparent surface area, pore volume, and chemical functionality from suitable molecular building blocks (MBBs) containing the Ru or Co complexes, as rigid and multitopic nodes. The cobaloxime molecular building block, generated through in situ metalation, afforded a microporous solid that demonstrated noticeable catalytic activity toward hydrogen-evolution reaction (HER) with remarkable recyclability. We further demonstrated, in two cases, the ability to affect the excited-state lifetime of the covalently immobilized Ru(bpy)3 complex attained through deliberate utilization of the organic linkers of variable dimensions. Overall, this approach facilitates construction of tunable porous solids, with hybrid composition and pronounced chemical and physical stability, based on the well-known Ru(bpy)nor the cobaloxime complexes.
authors.affiliation: Center for Materials Science, Zewail City of Science and Technology , Sheikh Zayed District, 12588 Giza, Egypt.
authors.forename: Rana R
authors.initials: RR
authors.lastname: Haikal
authors.affiliation: Laboratoire de Chimie des Processus Biologiques, PSL Research University, Collège de France, CNRS UMR8229, Université Pierre et Marie Curie , 11 Place Marcelin Berthelot, 75231 Cedex 05 Paris, France.
authors.forename: Xia
authors.initials: X
authors.lastname: Wang
authors.affiliation: Center for Materials Science, Zewail City of Science and Technology , Sheikh Zayed District, 12588 Giza, Egypt.
authors.forename: Youssef S
authors.initials: YS
authors.lastname: Hassan
authors.affiliation: Division of Physical Science and Engineering, Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia.
authors.forename: Manas R
authors.initials: MR
authors.lastname: Parida
authors.affiliation: Division of Physical Science and Engineering, Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia.
authors.forename: Banavoth
authors.initials: B
authors.lastname: Murali
authors.affiliation: Division of Physical Science and Engineering, Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia.
authors.forename: Omar F
authors.initials: OF
authors.lastname: Mohammed
authors.affiliation: Department of Chemistry and Biochemistry, University of South Carolina , Columbia, South Carolina 29208, United States.
authors.forename: Perry J
authors.initials: PJ
authors.lastname: Pellechia
authors.affiliation: Laboratoire de Chimie des Processus Biologiques, PSL Research University, Collège de France, CNRS UMR8229, Université Pierre et Marie Curie , 11 Place Marcelin Berthelot, 75231 Cedex 05 Paris, France.
authors.forename: Marc
authors.initials: M
authors.lastname: Fontecave
authors.affiliation: Center for Materials Science, Zewail City of Science and Technology , Sheikh Zayed District, 12588 Giza, Egypt.
authors.forename: Mohamed H
authors.initials: MH
authors.lastname: Alkordi
keywords: Ru complexes; hydrogen evolving cobaloxime catalysts; photochemical heterogeneous catalysis; porous−organic polymers; solid-state NMR