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Joel S. Miller INORGANIC, ORGANIC, PHYSICAL & MATERIALS CHEMISTRY Distinguished Professor B.S., Wayne State University, 1967 Ph.D., University of California, Los Angeles, 1971 Postdoctoral Associate, Stanford University, 1972 Phone: 801-585-5455 Office: 2124 HEB-N Email: jsmiller@chem.utah.edu Research Group Publications

Activities & Awards

• American Physical Society's James C. McGroddy Prize for New Materials, 2007
• State of Utah Governors Medal for Science and Technology, 2004
• Utah Award From the Central Utah & Salt Lake Sections of the American Chemical Society, 2004
• Gerhard M.J Scmidt Lecturer, Weizmann Institute of Science, 2003
• Distinguished Research/Creative Award, 2001 University of Utah
• American Chemical Society Award for Chemistry of Materials, 2000
• Japan Society for the Promotion of Science Fellow, 2000
• Wayne State University, Distinguished Alumni Award, 1998
• Manchot Research Professor, Technical University of Münich, 1996
• Visiting Scientist, Weizmann Institute of Science, Rehovot, 1985, 1996
• Industrial Fellow, Northwestern University Material Research Center,1991-93
• Visiting Professor of Chemistry, Universite de Paris-Sud, 1991; University of Pennsylvania, 1988; University of California, Irvine, 1981
• Advisory Boards, Advanced Materials; Chemistry- A European Journal; Inorganic Synthesis Corporation

Research Interests

New materials based upon molecular chemistry are the focus of our group's research activities. We strive toward the preparation and characterization of new materials with fascinating magnetic, electrical, and optical properties. At present, our major effort is to prepare magnets based on molecular/ organic/ polymeric chemistry. We have demonstrated that systems comprising radical cations and anions such as those with alternating chain structures, may exhibit ferromagnetic coupling and in some cases are bulk (3-D) ferromagnets. The tetracyanoethylene (TCNE) radical anion salt of decamethylferrocene is a magnet with a T_c of 4.8 K. Furthermore, on a mole basis they are significantly stronger magnets than iron metal.

This led us to react bis(benzene)vanadium with TCNE, and an exciting new magnet with an unexpected T_c above room temperature was prepared. We have also identified a new class of molecule-based magnets based on Mn(porphyrin)(TCNE) and exciting new materials with unexpected magnetic properties are evolving. We are studying the intradimer bonding that occurs for π-[TCNE]₂^2- that has a 2.9 Å intradimer separation, and an unusual 2-electron 4-carbon atom bond. This bonding arrangement gives rise to an additional CN as well as a new CC vibrations. Related dimers are being studied.

Our multidisciplinary research targets projects aimed to understand the structure-function relationship to ultimately enable the preparation of stable, technologically useful, high-T_c molecule-based and/or polymeric magnets.

Film of V[TCNE]x- Room Temperature Sticking to a Magnet.

[TCNE]22- Structure with 2e-/4c CC Bond.

 

Selected Publications

• Thin Film V[TCNE]x Magnets, K.I. Prokhodnya, A.J. Epstein, J.S. Miller, Adv. Mater. 2000 , 12,410.
• Chemical Reduction of 2,4,6-Tricyano-1,3,5-triazine and 1,3,5-Tricyanobenzene. Formation of the 4,4',6,6'-Tetracyano-2,2'-bitriazine and its Radical Anion, R. E. Del Sesto, A. M. Arif, J. J. Novoa, I. Anusiewicz, P. Skurski, J. Simons, B. C. Dunn, E. M. Eyring, J. S. Miller, J. Org. Chem. 2003 , 68, 3367.
• Exceptionally Long ( > 2.9 Å) CC Bonding Interactions in π-[TCNE]₂^2- dimers: Electron - 4 Center Cation-mediated CC Bonding Interactions Involving π* Electrons, R. E. Del Sesto, J. S. Miller, J. J. Novoa, P. Lafuente, Chem. Eur. J. 2002, 8, 4894
• Diruthenium Tetracarboxylate Monocation, [Ru₂(O₂CR)₄]⁺, Building Blocks for 3-D Molecule-based Magnets, T. E. Vos, Y. Liao, W. W. Shum, J-H. Her, P. W. Stephens, W. M. Reiff, J. S. Miller, J. Am. Chem. Soc. 2004, 126, 11630.
• Enhancement of the Magnetic Ordering Temperature (and Air Stability) of a Mixed Valent Vanadium Hexacyanochromate(III) Magnet to 99 °C (372 K), Ø. Hatlevik, W.E. Buschmann, J. Zhang, J.L. Manson, J.S. Miller, Adv. Mater. 1999, 11, 914.
• Designer Magnets, J.S. Miller, A.J. Epstein, Chem. & Eng. News, 1995, 73 (#40), 30.
• Organic and Organometallic Magnetic Materials Designer Magnets, J.S. Miller, A.J. Epstein, Angew. Chem. Internat. Ed . 1994, 33, 385.
• Cyanil, Synthesis and Characterization of the Strongest Isolated Electron Acceptor and its Reduced Forms, Vazquez, J.C. Calabrese, D.A. Dixon and J.S. Miller, J. Org. Chem. 1993, 58, 65.
• meso-(Tetraphenylporphyrinato)manganese III Tetracyanoethenide [Mn(III) TPP][TCNE]. A Linear Chain Magnet with a T_c of 18 K, J.S. Miller, J.C. Calabrese, R.S. McLean, A.J. Epstein, Adv. Mater. 1992, 4, 498.
• A Room Temperature Molecular/Organic-Based Magnet, J.M. Manriquez, G.T. Yee, R.S. McLean, A.J. Epstein, J.S. Miller, Science 1991, 252, 1415.
• Hexaazaoctadecahydrocoronene, HOC. Structural and Physical Properties of [HOC]n (n = 0, 1+, 2+, 3+, 4+), J.S. Miller, D.A. Dixon, J.C. Calabrese, C. Vazquez, P.J. Krusic, M.D. Ward, E. Wasserman, R.L. Harlow, J. Am. Chem. Soc. 1990, 112, 381.
• Molecular Electronics. J.S. Miller, Adv. Mater. 1990, 2, 378; 495; 601.
• One-Dimensional Inorganic Complexes, J.S. Miller, A.J. Epstein, Prog. Inorg. Chem. 1976, 20, 1.