John B. Wiley, Ph.D.

John Wiley

Biography

  • B.S., Cal State Fullerton 1982
  • M.S., Cal State Fullerton 1985
  • Ph.D., Northwestern 1989


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Research Specialties

  • Inorganic Chemistry
  • Solid state Chemistry
  • Material Science

Research in our group focuses on two areas: 1) the development of low temperature (<500°C) topotactic synthetic strategies for design and construction of nonmolecular materials and 2) the control nano- and meso-scale topological features through the modification of porous templates.

Topotactic strategies. In solid-state chemistry, compounds are often synthesized by reacting elements or binaries at high temperatures for extended periods. This approach, however, can limit the control of specific structural features to only those obtainable within the bounds of a specific structure type (e.g., spinel). A major goal of our group is to develop low-temperature synthetic strategies to direct the construction of extended one-, two-, and three-dimensional features in nonmolecular solids. Topochemical methods such as ion exchange and intercalation/deintercalation are effective for the manipulation of structure. By systematically utilizing these techniques, novel features can be formed within existing compounds.

Currently we have several projects involving the development of low-temperature reaction strategies. One recent example involves the formation of alkali-metal halide arrays within layered perovskite hosts. Here the sequential application of ion exchange and reductive intercalation is used to build lithium-chloride layers.

Porous Membrane Modification. Porous membranes are routinely used for the fabrication of simple nanowires, nanotubes, superlattice wires, etc. In addition to making these structures, our group works to modify the templates so as to control structure features at the nano- and meso-scale. Some examples here include porous wires, metal sphere arrays, colloidal crystal wires, and square microcapsules. Also, we have made patterned metal nanowire arrays from lithographically patterned membranes.

Our group is part of the Advanced Materials Research Institute (AMRI), a multidisciplinary materials institute that combines the interests of academic, government and industrial scientits.

 

Recent Papers

"Assembly of Metal-Anion Arrays within a Perovskite Host. Low-Temperature Synthesis of New Layered Copper-Oxyhalides, (CuX)LaNb2O7, X = Cl, Br." K. A. Thomas, J. N. Lalena, W. L. Zhou, E. E. Carpenter, C. Sangregorio, A. U. Falster, W. B. Simmons, Jr., C. J. O’Connor, and J. B. Wiley J. Am. Chem. Soc. 1999, 121, 10743.

"Electrodeposited nickel and gold nanoscale metal meshes with potentially interesting photonic properties," L. Xu, W. L. Zhou, C. Frommen, R. H. Baughman, A.A. Zakhidov, L. Malkinski, J.-Q. Wang, and J. B. Wiley J. Chem. Soc., Chem. Commun. 2000, 997.

"Formation of Metal-Anion Arrays within Layered Perovskite Hosts. Preparation of a Series of New Metastable Transition-Metal Oxyhalides, (MCl)LaNb2O7 (M = Cr, Mn, Fe, Co)," L. Viciu, G. Caruntu, N. Royant, J. Koenig, W. L. Zhou, T. A. Kodenkandath, and J. B. Wiley, Inorg. Chem., 2002, 41, 3385.

"Synthesis of Porous Wires from Directed Assemblies of Spheres," F. Li, J. He, W. Zhou, and J. B. Wiley J. Am. Chem. Soc. 2003, 125, 16166.

"Fabrication of Colloidal Crystals with Tubular-like Packings," F. Li, Xavier Badel, Jan Linnros, and John B. Wiley,* J. Am. Chem. Soc. 2005, 127, 3268.

"Patterned Metal Nanowire Arrays from Photolithographically-Modified Templates," F. Li, M. Zhu, C. Liu, W. Zhou and J. B. Wiley* J. Am. Chem. Soc. 2006, 128, 13342.