Zirconium phosphate electron transfer

Energy transfer among naphthyl-, anthryl-, and pyrenylalkylammonium bound to zirconium phosphate and photoinduced electron transfer from 5,10,15,20-tetrakis(4-phosphonophenyl)porphyrin to lVAf-bis(3-phosphonopro-pyl)-4-4 -bipyridinium organized in Zr-based self-assembled multilayers have been reported (238-240). The layered structure plays an important role in organizing reactants to control the reaction. 

Although there are numerous families of lamellar solids, only a handful of them exhibit the kind of versatile intercalation chemistry that forms the basis of this book. In arriving at the content of this volume, the editors have accurately identified six classes of versatile layered compounds that are at the forefront of materials intercalation chemistry, namely, smectite clays, zirconium phosphates and phos-phonates, layered double hydroxides (known informally as hydrotalcites or anionic clays ), layered manganese oxides, layered metal chalcogenides, and lamellar alkali silicates and silicic acids. Graphite and carbon nanotubes have not been included, in part because this specialty area of intercalation chemistry is limited to one or two molecular layers of comparatively small guest species that are capable of undergoing electron transfer reactions with the host structure. 

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