UC Spark

Professor Bryce Elliot Williamson

Chemistry

Fields of Research

  • Chemical applications of group theory
  • Molecular electronic spectroscopy
  • Matrix-isolation spectroscopy
  • Molecular symmetry
  • Vibrational spectroscopy
  • Atmospheric chemistry

Researcher Summary

Research interests include: magnetooptical studies of chemical species ranging from diatomic radicals to transition-metal complexes and model compounds for biologically important molecules; UV/visible spectroscopy of matrix-isolated species; development of theoretical methods for extracting excited-state information concerning spin-orbit coupling, crystal-field interactions and vibronic effects from analysis of magnetooptical (MCD and MCPL) spectra; grazing-angle FT-IRRAS spectroscopy as a means to quantify trace contamination of surfaces; and chemistry and science education.

Subject Area: Disciplines


Future Research

  • Theoretical understanding of the effects of vibronic coupling on magneto-optical spectra

Key Methodologies

  • Grazing-angle FT-IRRAS spectroscopy
  • Magnetic circular dichroism (MCD)
  • Optical and matrix-isolation spectroscopy
  • UV/visible spectroscopy
  • Zeeman spectroscopy

Affiliations


Publications


  • Revell, L.E. and Williamson B.E. (2013) Why are some reactions slower at higher temperatures? Journal of Chemical Education (in press) http://dx.doi.org/10.1021/ed400086w. (Journal Article)
  • Revell, L.E., Bodeker G.E., Huck P.E. and Williamson, B.E. (2012) Impacts of the production and consumption of biofuels on stratospheric ozone. Geophysical Research Letters 39: L10804. http://dx.doi.org/10.1029/2012GL051546. (Journal Article)
  • Revell, L.E., Bodeker, G.E., Smale, D., Lehmann, R., Huck, P.E., Williamson, B.E., Rozanov, E. and Struthers, H. (2012) The effectiveness of N2O in depleting stratospheric ozone. Geophysical Research Letters 39: L15806. http://dx.doi.org/10.1029/2012GL052143. (Journal Article)
  • Williamson, B. and Hartshorn, R. (2012) The seismic impact on chemistry teaching and research at University of Canterbury. Chemistry Education in New Zealand (ChemEd NZ) 127(May 2012): 2-8. (Journal Article)
  • Revell, L.E., Bodeker, G.E., Huck, P.E., Williamson, B.E. and Rozanov, E. (2012) The sensitivity of stratospheric ozone through the 21st century to N2O and CH4. Atmospheric Chemistry and Physics 12(7): 11309-11317. http://dx.doi.org/10.5194/acp-12-11309-2012. (Journal Article)
  • Williamson, B.E. (2011) Determining the order of a molecular point group. Australian Journal of Education in Chemistry 71: 19-21. (Journal Article)
  • Harrison, J.J. and Williamson, B.E. (2011) Magnetic circular dichroism and absorption spectra of methylidyne in a krypton matrix. Journal of Physical Chemistry A 115: 8643-8649. http://dx.doi.org/10.1021/jp2048986. (Journal Article)
  • Lehr, J., Williamson, B.E. and Downard, A.J. (2011) Spontaneous Grafting of Nitrophenyl Groups to Planar Glassy Carbon Substrates: Evidence for Two Mechanisms. The Journal of Physical Chemistry C 115(14): 6629-6634. http://dx.doi.org/10.1021/jp111838r. (Journal Article)
  • Revell, L., Bodeker, G., Huck, P., Smale, D. and Williamson, B. (2011) The chemical sensitivity of stratospheric ozone to nitrous oxide and methane. Denver, CO, USA: World Climate Research Program Open Science Conference (WCRP OSC), 24-28 Oct 2011. (Conference Contribution - Poster presentation)
  • Revell, L.E., Bodeker, G.E., Huck, P.E., Smale, D. and Williamson, B.E. (2011) What is happening to ozone in the 21st century? Wellington, New Zealand: Extreme Weather 2011, 9-11 Feb 2011. (Conference Contribution - Oral presentation)
  • Lehr, J., Williamson, B.E., Barrière, F. and Downard, A.J. (2010) Dependence of catalytic activity and long-term stability of enzyme hydrogel films on curing time. Bioelectrochemistry 79(1): 142-146. http://dx.doi.org/10.1016/j.bioelechem.2009.12.004. (Journal Article)
  • Revell, L., Bodeker, G., Smale, D., Huck, P. and Williamson, B. (2010) How will future greenhouse gas emissions affect the Antarctic ozone hole? University of Canterbury, Christchurch, New Zealand: Annual Antarctic Conference 2010: A Taste of the Ice, 5-7 Jul 2010. (Conference Contribution - Poster presentation)
  • Lehr, J., Garrett, D.J., Paulik, M.G., Flavel, B.S., Brooksby, P.A., Williamson, B.E. and Downard, A.J. (2010) Patterning of Metal, Carbon, and Semiconductor Substrates with Thin Organic Films by Microcontact Printing with Aryldiazonium Salt Inks. Analytical Chemistry 82(16): 7027-7034. http://dx.doi.org/10.1021/ac101785c. (Journal Article)
  • Downard, A.J., Lehr, J., Garrett, D., Flavel, B., Williamson, B., Brooksby, P. and Paulik, M. (2010) Single- and Two-Component Patterning of Carbon, Metal and Silicon Substrates by Microcontact Printing with Aryldiazonium Salt Inks. Nice, France: 61st Annual Meeting of the International Society of Electrochemistry, 26 Sep-1 Oct 2010. (Conference Contribution - Oral presentation)
  • Revell, L., Bodeker, G., Huck, P. and Williamson, B. (2010) The effects of year-to-year variability and trends in stratospheric climate on the chemistry driving ozone depletion. Vienna, Austria: European Geosciences Union (EGU) General Assembly 2010, 2-7 May 2010. In Geophysical Research Abstracts 12 EGU2010-3749-1. (Conference Contribution - Abstract)
  • Lehr, J., Garrett, D.J., Williamson, B.E. and Downard, A.J. (2009) Investigations and Applications of Spontaneous Grafting of Aryldiazonium Salts. Ankara University, Turkey: 8th International Electrochemistry Meeting in Turkey, 8-11 Oct 2009. (Conference Contribution - Oral presentation)
  • Lehr, J., Williamson, B.E., Flavel, B.S. and Downard, A.J. (2009) Reaction of Gold Substrates with Diazonium Salts in Acidic Solution at Open-Circuit Potential. Langmuir 25(23): 13503-13509. http://dx.doi.org/10.1021/la902002n. (Journal Article)
  • Perston, B.B., Hamilton, M.L., Harland, P.W., Thomson, M.A., Melling, P.J. and Williamson, B.E. (2008) Fiber-Optic Infrared Reflection Absorption Spectroscopy for Trace Analysis on Surfaces of Varying Roughness. Part II: Acetaminophen on Stainless Steel. Applied Spectroscopy 62(3): 312-318. http://dx.doi.org/10.1366/000370208783759731. (Journal Article)
  • Williamson, B.E. (2008) Magneto-Optical Spectroscopy of Metalloporhyrins and Metallophthalocyanines. Mahabalipuram, India: Spectroscopy and Dynamics of Molecules and Clusters : Fifth Discussion Meeting (SDMC5), 22-24 Feb 2008. (Conference Contribution - Oral presentation)
  • Williamson, B. and Taylor, K.C.L. (2008) Measuring the Jahn-Teller Effect. Dunedin, New Zealand: Chemistry and the Biosphere Conference, 30 Nov-4 Dec 2008. (Conference Contribution - Oral presentation)
  • Perston, B.B., Hamilton, M.L., Williamson, B.E., Harland, P.W., Thomson, M.A. and Melling, P.J. (2007) Grazing-Angle Fibre-Optic Fourier Transform Infrared Reflection-Absorption Spectroscopy for the in Situ Detection and Quantification of Two Active Pharmaceutical Ingredients on Glass. Analytical Chemistry 79(3): 1231-1236. http://dx.doi.org/10.1021/ac061660a. (Journal Article)
  • Hamilton, M.L., Perston, B.B., Harland, P.W., Williamson, B.E., Thomson, M.A. and Melling, P.J. (2006) Fiber-Optic Infrared Reflection Absorption Spectroscopy for Trace Analysis on Surfaces of Varying Roughness: Sodium Dodecyl Sulfate on Stainless Steel. Applied Spectroscopy 60(5): 516-520. http://dx.doi.org/10.1366/000370206777412239. (Journal Article)
  • Williamson, B.E. (2006) Magneto-optical Spectroscopy of Matrix-Isolated Metalloporphyrins and Metallophthalocyanines. Dunedin, New Zealand: Laser and Applications Research Theme Meeting, 20 Nov 2006. (Conference Contribution - Oral presentation)
  • Perston, B.B., Hamilton, M.L., Harland, P.W., Williamson, B.E., Melling, P.J. and Thomson, M. (2005) Fourier transform infrared external reflection spectroscopy for the detection, identification and quantification of surface contamination. Honolulu, HI, USA: Pacifichem 2005, International Chemical Congress of Pacific Basin Societies, 14-19 Dec 2005. (Conference Contribution - Poster presentation)
  • Hamilton, M.L., Perston, B.B., Harland, P.W., Williamson, B.E., Thomson, M.A. and Melling, P.J. (2005) Grazing-Angle Fiber-Optic IRRAS for in Situ Cleaning Validation. Organic Process Research and Development 9: 337-343. (Journal Article)
  • Harrison, J.J. and Williamson, B.E. (2005) Magnetic circular dichroism and absorption spectra of phosphinidene in noble-gas matrices. Journal of Physical Chemistry A 109(7): 1343-1347. http://dx.doi.org/10.1021/jp0453156. (Journal Article)
  • Harrison, J.J. and Williamson, B.E. (2005) Magnetic circular dichroism of the mercapto radical in noble-gas matrices. Journal of the Indian Institute of Science 85: 391-402. (Journal Article)
  • Gerbier, P., Domingo, N., Gómez-Segura, J., Ruiz-Molina, D., Amabilino, D.B., Tejada, J., Williamson, B.E. and Veciana, J. (2004) Chiral, single-molecule nanomagnets: Synthesis, magnetic characterization and natural and magnetic circular dichroism. Journal of Materials Chemistry 14: 2455–2460. (Journal Article)
  • Domingo, N., Williamson, B.E., Gómez-Segura, J., Gerbier, P., Ruiz-Molina D., Amabilino., D.B., Veciana., J. and Tejada, J. (2004) Magnetism of isolated Mn12 single-molecule magnets detected by magnetic circular dichroism: Observation of spin tunneling with a magneto-optical technique. Physical Review B 69: 052405/1-4. (Journal Article)
  • Harrison, J.J., Williamson, B.E. and Rose, J.L. (2004) Magneto-optical investigations of imidogen in inert-gas matrices. Journal of Physical Chemistry A 108: 2633-2637. (Journal Article)
  • Wilkins, C.J., Tennant, W.C., Williamson, B.E. and McCammon, C.A. (2003) New Zealand Jade: Colouring and Constitution. Chem NZ 90: 16-21. (Journal Article)
  • Wilkins, C.J., Tennant, W.C., Williamson, B.E. and McCammon, C.A. (2003) Spectroscopic and related evidence on the colouring and constitution of New Zealand jade. American Mineralogist 88: 1336-1344. (Journal Article)
  • Williamson, B.E. and Morikawa, T. (2002) A chemically relevant model for teaching of the second law of thermodynamics. J. Chem. Ed. 79: 339-342. (Journal Article)
  • Williamson, B.E. and Taylor, K.C.L. (2002) Group theory and the near-ultraviolet absorption spectrum of benzene. Aust. J. Chem. Ed. 58: 13-20. (Journal Article)
  • Williamson, B.E. (2002) Working Out Thermodynamics. Education in Chemistry 39: 16-21. (Journal Article)
  • Prince, B.J., Williamson, B.E. and Reeves, R.J. (2001) Aggregation and site-selective spectroscopy of matrix-isolated metallophthalocyanines. Journal of Luminescence 93(4): 293-301. doi:10.1016/S0022-2313(01)00208-3. (Journal Article)
  • Prince, B.J., Williamson, B.E. and Reeves, R.J. (2001) Aggregation and site-selective spectroscopy of matrix-isolated metallophthalocyanines - USE OTHER RECORD. J. Lumin 93(4): 293--301. (Journal Article)
  • Morikawa, T. and Williamson, B.E. (2001) Model teaching of electrical neutrality in electrolyte solutions. J. Chem. Ed. 78(7): 934--6. (Journal Article)
  • Dunford, C.L., Williamson, B.E. and Krausz, E. (2000) Temperature-dependent magnetic circular dichroism of lutetium bisphthalocyanine. J. Phys. Chem. A 104(16): 3537--43. (Journal Article)
  • Langford, V.S. and Williamson, B.E. (1999) Magnetic circular dichroism of C60+ and C60- radicals in an argon matrices. J. Phys. Chem. A 103(33): 6533--6539. (Journal Article)
  • Hogan, D.J. and Williamson, B.E. (Ed.) (1999) New Zealand is different: chemical milestones in New Zealand history. Christchurch: Clerestory Press. 308pp. (Edited Book)
  • Williamson,B. (1998) A consistent definition of anode and cathode. CHEM NZ 73: 7--10. (Journal Article)
  • Langford, V.S. and Williamson, B.E. (1998) Magnetic circular dichroism and absorption spectra of the NH radical in an argon matrix. J. Phys. Chem. A 102: 2415--2423. (Journal Article)
  • Langford, V.S. and Williamson, B.E. (1998) Magnetic circular dichroism of the CH radical in an argon matrix. J. Phys. Chem. A 102: 138--45. (Journal Article)
  • Purchase, R., Krausz, E. and Williamson, B.E. (1998) Magneto-optic measurements of spectral holes. J. Lumin. 76 and 77: 339--43. (Journal Article)
  • Maclagan, R.G.A.R., Neiuwenhuyzen, M., Wilkins, C.J. and Williamson, B.E. (1998) Structural study of the cyclic chlorosiloxanes and chlorosilathiones. J. Chem. Soc., Dalton Trans. : 2697--701. (Journal Article)
  • Langford,V. and Williamson,B. (1997) 100 years of the Zeeman effect. CHEM NZ 68: 13--21. (Journal Article)
  • Langford, V.S. and Williamson, B.E. (1997) Magnetic circular dichroism and absorption spectra of the hydroxyl radical in an argon matrix. J. Phys. Chem. A 101: 3119-3124. (Journal Article)
  • Williamson,B.E. (1997) Nobel Prize in Chemistry, 1996: The discovery of the fullerenes. In Fogliani, C.L. (Ed.), Australian Chemical Resource Book: 132-139. Bathurst, NSW: Chemical and Scientific Aid Centre. (Chapter in Book)
  • Williamson,B.E. and Hogan,D.J. (1997) Unit standards in Chemistry: Survey and assessment. CHEM NZ 69: 9--14. (Journal Article)
  • Dunford, C.L. and Williamson, B.E. (1997) Weak temperature dependence in the magnetic circular dichroism of matrix-isolated copper phthalocyanine. J. Phys. Chem. A 101: 2050-2054. (Journal Article)
  • Purchase, R., Krausz, E., Riesen, H., Williamson, B.E., Dunford, C. L., Schatz, P.N. and Gasyna, Z. (1996) Chemical applications of FLN and spectral hole-burning: matrix-isolated chromophores. OSA Technical Digest Series: 192-193. Washington D.C.: Optical Society of America. (Other)
  • Williamson, B.E. (1996) Magnetic circular dichroism of the hydroxyl radical in an argon matrix. University of Otago: New Zealand Institute of Chemistry Conference, December 1996. (Conference Contribution - Oral presentation)
  • Krausz, E., Riesen, H., Schatz, P.N., Gasyna, Z., Dunford, C.L. and Williamson, B.E. (1996) Magneto-optical hole-burning studies of matrix-isolated phthalocyanines. J. Lumin. 66 & 67: 19-24. (Journal Article)
  • Dunford, C. L., Williamson, B.E., Schatz, P.N., Gasyna, Z., Krausz, E. and Riesen, H. (1996) Spectral hole-burning and magnetic circular dichroism of matrix-isolated copper phthalocyanine. Chem. Phys. Letters 260: 522-528. (Journal Article)
  • Williamson, B.E. (1995) Jahn-Teller and crystal-field effects in matrix-isolated metalloporphyrins. Australian National University, Canberra, Australia: Australian Conference on Physical Chemistry, February 1995. (Conference Contribution - Oral presentation)
  • Williamson, B.E. (1995) Jahn-Teller and crystal-field effects in matrix-isolated metalloporphyrins. Plymouth, New Hampshire, NH, USA: Gordon Research Conference on the Chemistry and Physics of Matrix Isolated Species, August 1995. (Conference Contribution - Oral presentation)
  • Gasyna, Z., Metcalf, D.H., Schatz, P.N., McConnell, C.L. and Williamson, B.E. (1995) Magnetooptical spectra of zinc octaethylporphyrin in an argon matrix. J. Phys. Chem. 99: 5865-5872. (Journal Article)
  • Williamson, B.E. (1995) Temperature-dependent MCD of matrix-isolated metalloporphyrins. Plymouth, New Hampshire, NH, USA: Gordon Research Conference on the Chemistry and Physics of Matrix Isolated Species, August 1995. (Conference Contribution - Poster presentation)
  • Upton, A.H.P. and Williamson, B.E. (1994) Magnetic circular dichroism and absorption spectra of hexacyanoferrate(III) in a polyvinylalcohol film. J. Phys. Chem. 98: 71-76. (Journal Article)
  • Williamson, B.E., Roser, D.C. and Vala, M. (1994) Magnetic circular dichroism and absorption spectra of the gamma-band region of titanium monoxide in an argon matrix. J. Phys. Chem. 98: 3624-3630. (Journal Article)
  • VanCott, T.C., Metcalf, D.H., Koralewski, M., Schatz, P.N. and Williamson, B.E. (1993) Magnetooptical spectroscopy of zinc tetrabenzoporphyrin in an argon matrix. J. Phys. Chem. 97: 7417-7426. (Journal Article)
  • Williamson, B.E., VanCott, T.C., Boyle, M.E., Misener, G.C., Stillman, M.J. and Schatz, P.N. (1992) Determination of the ground state of manganese phthalocyanine using magnetic circular dichroism and absorption spectroscopy. J. Am. Chem. Soc. 114: 2412-2419. (Journal Article)
  • Williamson, B.E. (1992) Magnetooptical spectroscopy of the Q transition of zinc tetrabenzoporphyrin isolated in an argon matrix. Ohio State University, Columbus, OH, USA: 47th International Symposium on Molecular Spectroscopy, June 1992. (Conference Contribution - Oral presentation)
  • Williamson, B.E. (1991) Determination of the orbital reduction factor of the ferricyanide ion using magnetic circular dichroism. University of Canterbury: New Zealand Institute of Chemistry Conference, August 1991. (Conference Contribution - Oral presentation)
  • Williamson, B.E., VanCott, T.C., Rose, J.L., Schrimpf, A., Koralewski, M. and Schatz, P.N. (1991) Electronic spectra of phthalonitrile isolated in an argon matrix. J. Phys. Chem. 95: 6835-6842. (Journal Article)
  • Williamson, B.E. (1991) Magnetooptical spectroscopy of matrix-isolated metallophthalocyanines and metalloporphyrins. Australian National University: Australian Conference on Optics, Lasers and Spectroscopy, October 1991. (Conference Contribution - Oral presentation)
  • Metcalf, D.M., VanCott, T.C., Snyder, S.W., Schatz, P.N. and Williamson, B.E. (1990) Magnetic circularly polarized luminescence of zinc phthalocyanine in an argon matrix. J. Phys. Chem. 94: 2828-2832. (Journal Article)
  • VanCott, T.C., Rose, J.L., Misener, G.C., Williamson, B.E., Schrimpf, A.E., Boyle, M.E. and Schatz, P.N. (1989) Magnetic circular dichroism and absorption spectrum of zinc phthalocyanine in an argon matrix, between 14 700 and 74 000 cm-1. J. Phys. Chem. 93: 2999-3011. (Journal Article)
  • Williamson, B.E. (1989) MCD at Canterbury. Waikato University: New Zealand Institute of Chemistry Conference, August 1989. (Conference Contribution - Oral presentation)
  • Williamson, B.E. (1988) Magnetic circular dichroism of zinc phthalocyanine isolated in an argon matrix obtained with synchrotron radiation and conventional sources. Massey University: New Zealand Institute of Chemistry Conference, August 1988. (Conference Contribution - Oral presentation)
  • Williamson, B.E. (1988) Matrix-isolation magnetic circular dichroism and absorption spectra of zinc phthalocyanine. University of Wisconsin, Madison, WI, USA: Synchrotron Research Center User’s Group Meeting, October 1988. (Conference Contribution - Oral presentation)
  • Williamson, B.E. (1988) Vibrational analysis of the low frequency (600-150 cm-1) modes of cobalt(III) polyamine complexes. Massey University: New Zealand Institute of Chemistry Conference, August 1988. (Conference Contribution - Oral presentation)
  • Williamson, B.E., Dubicki, L. and Harnung, S.E. (1988) Vibrational Raman spectra of tris(1,2-ethanediamine) complexes of cobalt(III) and rhodium(III). Inorg. Chem. 27: 3484-3490. (Journal Article)
  • Samet, C., Rose, J.L., Williamson, B.E. and Schatz, P.N. (1987) Magnetic circular dichroism of the potassium atom “blue triplet” in a xenon matrix. Chem. Phys. Letters 142: 557-561. (Journal Article)
  • Williamson, B.E. (1987) The use of synchrotron radiation in magnetic circular dichroism. University of Melbourne: Australian Institute of Physical Sciences Workshop on the Uses of Synchrotron Radiation, August 1987. (Conference Contribution - Oral presentation)
  • Williamson, B.E., Boyle, M.E., Schatz, P.N., Marks, J.P. and Snyder, P.A. (1987) Vacuum ultraviolet MCD and absorption spectra of zinc phthalocyanine isolated in an Ar matrix using synchrotron radiation. Chem. Phys. Letters 140: 483-488. (Journal Article)
  • Smith, D., Williamson, B.E. and Schatz, P.N. (1986) Identification of the alkalide, Na-, in Na/NH3 matrices using MCD. Chem. Phys. Letters 131: 457-462. (Journal Article)
  • Rose, J., Smith, D., Williamson, B.E., Schatz, P.N. and O'Brien, M.C.M. (1986) Magnetic circular dichroism and the Jahn-Teller effect in 2S -> 2P transitions of sodium and lithium atoms isolated in xenon matrices. J. Phys. Chem. 90: 2608-2615. (Journal Article)
  • Boyle, M.E., Williamson, B.E., Schatz, P.N., Marks, J.P. and Snyder, P.A. (1986) Vacuum ultraviolet MCD and absorption spectra of benzene isolated in an Ar matrix using synchrotron radiation. Chem. Phys. Letters 130: 33-38. (Journal Article)
  • Boyle, M.E., Williamson, B.E., Schatz, P.N., Marks, J.P. and Snyder, P.A. (1986) Vacuum ultraviolet MCD and absorption spectra of P4 isolated in an Ar matrix using synchrotron radiation. Chem. Phys. Letters 125: 349-354. (Journal Article)
  • Nelson, D.G.A. and Williamson, B.E. (1985) Raman spectra of phosphate and monofluorophosphate ions in several dentally-relevant materials. Caries Res. 19: 113-121. (Journal Article)
  • Dubicki, L., Ferguson, J. and Williamson, B. (1984) Circular dichroism of cobalt(III) complexes: II. Phase changes in lambda-Co(sepulchrate)(NO3)3. J. Phys. Chem. 88: 4254-4258. (Journal Article)
  • Dubicki, L. and Williamson, B. (1984) Raman spectra of Co(NH3)6X3 (X = Cl, Br, I) complexes. Inorg. Chem. 23: 3779-3784. (Journal Article)
  • Welberry, T.R. and Williamson, B.E. (1983) Evidence for the isomorphism of the low-temperature form of hexaammine cobalt(III) iodide with the room-temperature structure of hexaamminecobalt(III) chloride. Acta Crystallographica 39: 513-514. (Journal Article)
  • Dubicki, L., Ferguson, J. and Williamson, B. (1983) Inequivalent clusters and energy transfer in trinuclear chromium(III) acetate. Inorg. Chem. 22: 3220-3224. (Journal Article)
  • Williamson, B.E. (1983) Optical and vibrational studies of transition metal complexes in the solid state. PhD, Australian National University, Canberra, Australia. (Thesis - Doctor of Philosophy)
  • Nelson, D.G.A. and Williamson, B.E. (1982) Low-temperature laser Raman spectroscopy of synthetic carbonated apatites and dental enamel. Aust. J. Chem. 35: 715-727. (Journal Article)