Metal Phosphonate Chemistry (PDF)

Abraham Clearfield's research interests are focused on solid state and materials chemistry and encompass a wide variety of projects. An important goal is the ability to design and synthesize new materials whose structure and properties can be predicted and controlled. Layered compounds are amenable to manipulation to produce new structures because of the weak forces between layers and his group have learned how to separate the layers of several classes of compounds and are reconstituting them into novel materials. For example, photochemically active species may be encapsulated to produce permanently porous structures of controlled pore size - such compounds may prove to be selective catalysts. Layered proton conductors and self-assembled supramolecules of novel structures and properties have been prepared and some of these find utility in the separation of radioactive ions from nuclear waste. Zeolites are among the most powerful and versatile catalysts known and Professor Clearfield's group have initiated a program to synthesize new materials with pores in the 10-20+ range. These materials include organic-inorganic hybrids as well as mixed metal oxides. The research interests of Konstantinos D Demadis and his group include synthesis and structural characterization of metal phosphonate frameworks, and crystal engineering with an emphasis on hybrid materials synthesis. Applications that result from these efforts include gas sorption and storage, corrosion control, and interface chemistry. Other research interests include colloidal silica and silicates-containing composite materials, mechanistic studies on formation and dissolution of colloidal silica, and effects of polymers on colloidal silica properties. Silicon chemistry is pursued based on bioinspired and biomimetic approaches. An important part of Professor Demadis' research efforts includes synthesis, characterization, selection and utilization of dispersant homo-, co-, and terpolymers, study of polymer/surface

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