个人简介

B.Sc., Memorial (1965); M.Sc., Memorial (E. Bullock, 1968); Ph.D., Bristol (A.D. Buckingham, 1970); Postdoctoral, British Columbia (M. Bloom, 1969-71) and Basel (P. Diehl, 1971-72).

研究领域

Chemical Physics

Nuclear magnetic resonance (NMR) has become an important technique for the study of molecular systems, and in recent years both liquid and solid type NMR experiments have been applied to ordered fluids, including liquid crystals, soaps, biological membranes, and solute molecules partially oriented in liquid-crystal solvents. Dr. Burnell's research exploits these NMR methods to investigate liquid crystalline systems. The normal single-quantum proton NMR spectra of partially oriented molecules often contain hundreds of lines. For example, the lower spectrum is that of a mixture of p-xylene, p-dichlorobenzene and 1,3,5-trichlorobenzene dissolved in a nematic liquid crystal. In the upper spectrum a computer fit to the p-xylene spectrum has been subtracted (negative peaks) leaving the simpler spectra of the other two solutes as positive peaks. Two-dimensional multiple-quantum NMR techniques were employed to make tractable the analysis of the very complex p-xylene single-quantum spectrum. From such experiments much valuable molecular information, such as accurate molecular geometries and various anisotropic properties of the molecules, is obtainable. In particular, Dr. Burnell's group is interested in the average orientation of both the liquid crystal molecules and of the dissolved solutes, and in the intermolecular forces that are responsible for this orientational order. The group is studying these anisotropic intermolecular forces from two points of view. In one approach, they are using mean-field models to describe both long- and short-range forces. The dominant contributions are 1) short-range repulsive interactions and 2) interactions between the solute molecular quadrupole moment and the mean electric field gradient that is present in most liquid crystals. In the other approach, they are carrying out Monte Carlo computer simulations, which incorporate both short-range repulsive and electrostatic interactions, to model the liquid crystal solutions used in NMR studies. These computer simulations of NMR experimental results demonstrate an important feature of Dr. Burnell's approach to research, i.e. the interplay between experiment and theory.

近期论文

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E. Burnell, E. ; Weber, A. C. J. ; Dong, R. Y. ; W. Meerts, L. ; de Lange, C. A. A Model-Free Temperature-Dependent Conformational Study Of N-Pentane In Nematic Liquid Crystals. JOURNAL OF CHEMICAL PHYSICS 2015, 142, 024904.BibTex 2014 E. Burnell, E. ; Dong, R. Y. ; Weber, A. C. J. ; Yethiraj, A. Nmr Of Solutes In Nematic And Smectic A Liquid Crystals: The Anisotropic Intermolecular Potential. MAGNETIC RESONANCE IN CHEMISTRY 2014, 52, 570-580.BibTex 2013 Weber, A. C. J. ; Dong, R. Y. ; W. Meerts, L. ; Yang, X. ; E. Burnell, E. Nmr Of Short-Chain Hydrocarbons In Nematic And Smectic A Liquid Crystals. JOURNAL OF PHYSICAL CHEMISTRY A 2013, 117, 9224-9234.BibTex 2012 Dong, R. Y. ; Kohlmeier, A. ; Tamba, M. G. ; Mehl, G. H. ; Burnell, E. E. Solute Nmr Study Of A Bimesogenic Liquid Crystal With Two Nematic Phases. Chemical Physics Letters 2012, 552, 44 - 48.BibTex Weber, A. C. J. ; Pizzirusso, A. ; Muccioli, L. ; Zannoni, C. ; W. Meerts, L. ; de Lange, C. A. ; Burnell, E. E. Efficient Analysis Of Highly Complex Nuclear Magnetic Resonance Spectra Of Flexible Solutes In Ordered Liquids By Using Molecular Dynamics. The Journal of Chemical Physics 2012, 136, 174506.BibTex 2011 Weber, A. C. J. ; Burnell, E. E. Conformational Statistics Of N-Butane In The Condensed Phase And The Effects Of Temperature. Chemical Physics Letters 2011, 506, 196 - 200.BibTex Burnell, E. E. ; Weber, A. C. J. ; de Lange, C. A. ; W. Meerts, L. ; Dong, R. Y. Nuclear Magnetic Resonance Study Of Alkane Conformational Statistics. The Journal of Chemical Physics 2011, 135, 234506.BibTex Burnell, E. E. ; Dong, R. Y. ; Weber, A. C. J. ; Yang, X. ; Yethiraj, A. Separation Of Nematic And Smectic-A Potential Effects On Solute Ordering In A Series Of Binary 6Ocb–8Ocb Mixtures. Canadian Journal of Chemistry 2011, 89, 900 - 908.BibTex 2010 Burnell, E. E. ; de Lange, C. A. ; Capitani, D. ; Angelini, G. ; Ursini, O. 3H Nmr Of The Tritiated Isotopologues Of Methane In Nematic Liquid-Crystal Solvents. Chemical Physics Letters 2010, 486, 21 - 26.BibTex Weber, A. C. J. ; de Lange, C. A. ; W. Meerts, L. ; Burnell, E. E. The Butane Condensed Matter Conformational Problem. Chemical Physics Letters 2010, 496, 257 - 262.BibTex Weber, A. C. J. ; Yang, X. ; Dong, R. Y. ; Burnell, E. E. The Smectic Effect On Solute Order Parameters Rationalized By Double Maier-Saupe Kobayashi-Mcmillan Theory. Journal of Chemical Physics 2010, 132, 034503/1 - 034503/8.BibTex de Lange, C. A. ; W. Meerts, L. ; Weber, A. C. J. ; Burnell, E. E. Scope And Limitations Of Accurate Structure Determination Of Solutes Dissolved In Liquid Crystals. The Journal of Physical Chemistry A 2010, 114, 5878 - 5887.BibTex 2009 Weber, A. C. J. ; Yang, X. ; Dong, R. Y. ; Meerts, W. L. ; Burnell, E. E. Solute Order Parameters In Liquid Crystals From Nmr Spectra Solved With Evolutionary Algorithms: Application Of Double Maier-Saupe Kobayashi-Mcmillan Theory. Chemical Physics Letters 2009, 476, 116-119.BibTex Meerts, W. L. ; de Lange, C. A. ; Weber, A. C. J. ; Burnell, E. E. Evolutionary Algorithms To Solve Complicated Nmr Spectra. Journal of Chemical Physics 2009, 130, 8.BibTex Danilovic, Z. ; Burnell, E. E. Orientational Order Of Near D-3H Solutes In Nematic Liquid Crystals. Journal of Chemical Physics 2009, 130, 11.BibTex Sokolovskii, R. O. ; Burnell, E. E. Orientational Order Of Near D-3H Solutes In Nematic Liquid Crystals. Ii. Description Via Gay-Berne Model With Embedded Quadrupoles. Journal of Chemical Physics 2009, 130, 6.BibTex 2008 Lee, J. S. J. ; Sokolovskii, R. O. ; Berardi, R. ; Zannoni, C. ; Burnell, E. E. Orientational Order Of Solutes In Liquid Crystals: The Effect Of Distributed Electric Quadrupoles. Chemical Physics Letters 2008, 454, 56-60.BibTex Burnell, E. E. ; Beek, L. C. ter; Sun, Z. M. Mechanisms Of Solute Orientational Order In Nematic Liquid Crystals. Journal of Chemical Physics 2008, 128, 10.BibTex 2007 Yethiraj, A. ; Burnell, E. E. ; Dong, R. Y. The Smectic Potential In A Liquid Crystal With A Reentrant Nematic Phase: Nmr Of Solutes. Chemical Physics Letters 2007, 441, 245-249.BibTex Yethiraj, A. ; Weber, A. C. J. ; Dong, R. Y. ; Burnell, E. E. Nmr Determination Of Smectic Ordering Of Probe Molecules. Journal of Physical Chemistry B 2007, 111, 1632-1639.BibTex Capitani, D. ; Yethiraj, A. ; Burnell, E. E. Memory Effects Across Surfactant Mesophases. Langmuir 2007, 23, 3036-3048.BibTex Meerts, W. L. ; de Lange, C. A. ; Weber, A. C. J. ; Burnell, E. E. A Simple Two-Step Automatic Assignment Procedure For Complicated Nmr Spectra Of Solutes In Liquid Crystals Using Genetic Algorithms. Chemical Physics Letters 2007, 441, 342-346.BibTex