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Professor, Physical Chemistry and Director of Va. Tech Center for
Self-Assembled Nano-Devices (CSAND)
E-mail: hdorn@vt.edu
Office: 1109 Hahn Hall
Phone: 540-231-5953
Fax: 540-231-3255
Dorn Web Site: http://www.dorn.chem.vt.edu
International Recognition-Web Page: http://www.100yearsofphysics.org/harry.html
Course Web Page: http://www.dorn.chem.vt.edu/teaching.html
Education
Ph.D. 1974, University of Calif., Davis
B.S. 1963-1966 University of California, Santa Barbara, CA
Research Interests
Harry C. Dorn joined the faculty at Virginia Tech in 1974 and initiated a research program that involved analytical applications and development of NMR techniques including direct coupling of high performance liquid chromatography and nuclear magnetic resonance, HPLC-NMR. [Anal. Chem., 1980] Today, the HPLC-NMR technique has evolved as an important tool in the pharmaceutical and bio-medical fields. [Anal. Chem., 1984] In the mid-1980's the Dorn laboratory initiated a second research area involving electron paramagnetic resonance (EPR) and dynamic nuclear polarization (DNP). These later studies provided new insight toward understanding fundamental nuclear/electron interactions. In these spectroscopic studies, weak intermolecular bonding interactions (e.g. hydrogen bonding) are studied for intermolecular liquid/liquid, solid/liquid, and solid/solid interfaces.
In the early 1990's, the Dorn laboratory began a new area of research involving the synthesis, separation, and functionalization of the newly discovered carboneous nanomaterials, nanotubes, fullerenes and metal encapsulated fullerenes (endohedral metallofullerenes). In collaboration with Don Bethune and other scientists at IBM (Almaden) seminal papers involving the first bond length measurements [Science, 1991] and the corresponding solid-state dynamics of the soccer-ball shaped fullerene, C60 [Science, 1991] were published. In a collaborative study by VA Tech, the IBM group, and Silvera (Harvard) a new phase of carbon was reported by collapse of solid C60. [Phys. Rev., 1992] Later, the IBM team and the Dorn laboratory at Va Tech published the first direct confirmation of metal encapsulation in a fullerene cage, Sc2@C84. [Nature, 1994] In 1999, Dorn and Stevenson (VA Tech) discovered a new family of trimetallic nitride template (TNT) endohedral metallofullerenes A3N@C80 (A=Group IIIB and rare-earth metals). [Nature, 1999] In collaboration with Fowler (University of Exeter) we reported the first family of non-classical endohedral metallofullerenes A3N@C68 that are exceptions to the well known isolated pentagon rule (IPR). [Nature, 2000] In collaboration with Alan Balch (University of Calif., Davis) x-ray structural studies of other cage TNT endohedral metallofullerenes, A3N@C78 [Angew. Chem., 2001] and mixed TNT derivatives ErSc2N@C80 [JACS, 2001] were reported.* More recently, we have also reported the first exohedral organic functionalization of a TNT endohedral metallofullerene, Sc3N@C80. [JACS, 2002] In collaboration with Gibson (VA Tech) we published a unique chemical separation of these TNT endohedral metallofullerenes, A3N@C80 based on selective chemical reactivity. [JACS, 2005].
Selected Publications
- P. P. Fatouros; F. D. Corwin; Z.-J. Chen; W. C. Broaddus; J. L. Tatum; B. Kettenmann; Z. Ge; H. W. Gibson; J. L. Russ; A. P. Leonard; J. C. Duchamp; and H. C. Dorn "In Vitro and in Vivo Imaging Studies of a New Endohedral Metallofullerene Nanoparticle" Radiology, Published online before print July 12, (2006).
- T. Cai; L. Xu; M. R. Anderson; Z. Ge; T. Zuo; X. Wang; M. M. Olmstead; A. L. Balch; H. W. Gibson; and H. C. Dorn "Structure and Enhanced Reactivity Rates of the D5h Sc3N@C80 and Lu3N@C80 Metallofullerene Isomers: The Importance of the Pyracylene Motif" JACS, submitted June (2006).
- X. Wang; T. Zuo; M. M. Olmstead; J. C. Duchamp; T. E. Glass; F. Cromer; A. L. Balch, and H. C. Dorn "Preparation and Structure of CeSc2N@C80: An Icosahedral Carbon Cage Enclosing an Acentric CeSc2N Unit with Buried f Electron Spin" JACS, submitted June (2006).
- H.W. Gibson; Z. Ge; J.W. Jones; H.C. Dorn, "Multitopic C60 Derivatives: Effective Building Blocks for Supramolecular Chemistry", Macromolecular Chemistry & Physics 2006, to be submitted (2006).
- M. M.Olmstead; T. Zuo; X. Wang; K. Harich; H. W. Gibson; H. C. Dorn; Alan L. Balch "The Structure of the D5h Isomer of Sc3N@C80 May Account for Its Greater Reactivity Relative to the Ih Isomer" JACS, submitted Jan., (2006).
- Cai; C. Slebodnick; L. Xu, K. Harich; T. E. Glass; C. Chancellor; J. C. Fettinger; M. M. Olmstead; A. L. Balch; H. W. Gibson; and H. C. Dorn "A Pirouette Dance on a Metallofullerene Sphere: Interconversion of Isomers of N-Tritylpyrrolidino Ih Sc3N@C80" JACS, accepted, Mar., (2006).
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