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School of Physical, Environmental and Mathematical Sciences |
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Research Interests:
Molecular Design and Reaction Mechanisms
Research Biography
Doctoral studies (at the Research School of Chemistry, ANU) involved synthesis of new redox-active and luminescent transition metal complexes, and study of their electronic properties by electrochemistry and spectroscopy. Postdoctoral work in the US (University of North Carolina) involved similar work on highly luminescent transition metal complexes with potential for use in solar energy devices (partly funded by US Department of Energy), and subsequent postdoctoral work at ANU involved laser spectroscopy and vibrational spectroscopy of isotope-labelled coordination complexes. Prior to taking up a lectureship at UNSW@ADFA, postdoctoral work was undertaken in the UK (University of Strathclyde) on development of novel techniques for explosives detection (funded by UK Police Scientific Development Branch).
Research
Current projects:
• Aspects of supramolecular
chemistry utilizing cucurbit[n]uril
Dr Anthony Day - cross collaboration on
some topics with Dr Lynne Wallace and/
or Assoc. Prof. Grant Collins
• Development of new methods
for explosives and contraband
detection based on host-guest
interactions
Dr Anthony Day, Dr Lynne Wallace,
Kirsten Adelstein, Prof. Chris Lennard,
Dr Paul Kirkbride
• Electrochemical remediation
processes for treatment of
wastewater from explosives
manufacturing
Dr Lynne Wallace & Dr Anthony Day
NTO (nitrotriazolone) is a new insensitive explosive that may replace RDX, the current military standard, in some applications. Due to its high water solubility, the wastewater from its manufacture cannot be treated by conventional means. We have been investigating alternative remediation methods based on electrochemical treatment for NTO, which may also be applicable for other organic explosives. These electrochemical methods are more environmentally friendly, since no additional chemical loading is required, and the only input is electricity.
• Synthesis and characterization of
new high nitrogen compounds
Dr Lynne Wallace, Dr Anthony Day,
Dr Arthur Provatas,
Dr Ann-Kristin Larsson
Insensitive high explosives (IHEs) are an important area of research, due to the increased requirement for safer energetic materials in industrial and defence sectors. Azoxytriazolone (AZTO) is a new chemical species discovered by our research group, and preliminary results indicate it may possess potential as a new IHE. We are studying methods of synthesis of AZTO and other related compounds, and also investigating their solid-state and solution properties.
• Synthesis and study of new
iridium complexes for use in
supramolecular and medicinal
applications
Dr Lynne Wallace
Many molecular devices and pharmaceuticals contain components based on transition metals such as iridium or platinum. These transition metal complexes, consisting of organic units bonded to a central metal atom, can be structurally modified to fulfill different purposes. In this project, different synthetic approaches are used to prepare new iridium complexes, and these are studied, using a range of spectroscopic and electrochemical techniques, for their potential in light-activated molecular devices and to determine their interaction with biomolecules.
PhD Opportunities and Scholarships
Contact: Dr Lynne Wallace, l.wallace@adfa.edu.au
Further information concerning scholarships at: http://www.unsw.adfa.edu.au/pems/student/pgrescourses.html
Dr Lynne Wallace analysing her results in the laboratory. [Photo credit: K. Badek]
Teaching
- Level I Chemistry coordinator
- Level I Chemistry laboratory coordinator
- Chemistry 1A, 1B
- Engineering Chemistry 1A
- Inorganic Chemistry 2
- Explosives 3
- Chemical and Biological Defence (GE)
- Weapons Engineering (MEngSc program)
Publications
Publications in refereed journals
Michael P. Cronin, Anthony I. Day, and Lynne Wallace, "Electrochemical remediation produces a new high-nitrogen compound from NTO wastewaters." Journal of Hazardous Materials, 2007, 149(2), 527-531.
Hans Riesen and Lynne Wallace: "Non-photochemical spectral hole-burning mediated by water molecules in interligand pockets of [Cr(terpy) 2 ] 3+ ." Phys. Chem. Comm. 2003, 6(3), 9-11.
Hans Riesen, Lynne Wallace and Elmars Krausz; "Probing the Electronic Structures of Coordination Compounds by Transient Spectral Hole-Burning. Applications to Specifically Deuterated [Ru(bpy) 3 ] 2+ Complexes.". Inorg. Chem. 2000, 39(22), 5044-5052.
Hans Riesen, Lynne Wallace and Elmars Krausz; "Dynamical Processes in the Lowest-Excited Triplet Metal-to-Ligand Charge Transfer States of Ruthenium and Osmium Diimine Complexes in Crystals." Int. Rev. Phys. Chem. 1997, 16, 291-359.
Hans Riesen, Lynne Wallace and Elmars Krausz; "Localized 3 MLCT Excitations of [Ru(bpy) 3-x (bpy-6,6'-d 2 ) x ] 2+ (x = 0-3) in [Zn(bpy) 3 ](ClO 4 ) 2 (bpy=2,2'-Bipyridine)." Inorg. Chem. 1996, 35, 6908-6909.
Hans Riesen, Lynne Wallace and Elmars Krausz; "Localized 3 MLCT Transitions of [Ru(bpy) 3-x (bpy-6,6'-d 2 ) x ] 2+ (x = 0-3, bpy=2,2'-bipyridine). Probing Minimally Perturbed Chromophores." J. Phys. Chem. 1996, 100, 17138-17144.
Hans Riesen, Lynne Wallace and Elmars Krausz; "Intramolecular Mini-Excitons in the Series [Os(bpy) 3-x (bpy-d 8 ) x ] 2+ (x = 0-3) in [Zn(bpy) 3 ](ClO 4 ) 2 and [Ru(bpy) 3 ](ClO 4 ) 2 (bpy=2,2'-bipyridine)." Mol. Phys. 1996, 87, 1299-1317.
Hans Riesen, Lynne Wallace and Elmars Krausz; "Vibrational Sidelines in the Localized 3 MLCT Emission of [Ru(bpy) 2 (bpz)] 2+ in [Zn(bpy) 3 ](ClO 4 ) 2 (bpy=2,2'-bipyridine, bpz=2,2'-bipyrazine)." J. Phys. Chem. 1996, 100, 4390-4394.
Hans Riesen, Lynne Wallace and Elmars Krausz; "Deuteration Effects in the Lowest-Excited 3 MLCT States of [Ru(bpy) 3 ] 2+ in [Zn(bpy) 3 ](ClO 4 ) 2." J. Phys. Chem. 1995, 99, 16807-16809.
Lynne Wallace, Donald C. Jackman, D. Paul Rillema and Jon W. Merkert; "Temperature Dependent Emission Properties of Rhenium(I) Tricarbonyl Complexes Containing Alkyl- and Aryl-Substituted Phenanthrolines as Ligands." Inorg. Chem. 1995, 34, 5210-5214.
Hans Riesen, Lynne Wallace and Elmars Krausz; "Vibrational Sidelines in the Localized 3 MLCT Luminescence of [Ru(bpy) 3-x (L) x ] 2+ (x=0 to 3, L=3,3'-bipyridazine, bpy-d 8 ) in the C2/c [Zn(bpy) 3 ](ClO 4 ) 2 Lattice." Chem. Phys. 1995, 198, 269-280.
Lynne Wallace, Clifton Woods and D. Paul Rillema; "Structure and Luminescence Properties of [Re(4,7-dimethyl-1,10-phenanthroline)(CO) 3 py] + in a Solid Matrix." Inorg. Chem. 1995, 34, 2875-2882.
Hans Riesen, Lynne Wallace and Elmars Krausz; "Site-Selective and Stark Spectroscopy of the Series [Os(2,2'-bipyridine) 3-x (bipyridine-d 8 ) x ] 2+ (x=0 to 3) in Single-Crystal [Ru(2,2'-bipyridine) 3 ](PF 6 ) 2 . Localization of an Intramolecular Triplet Metal-to-Ligand Charge Transfer Exciton by Partial Deuteration." J. Chem. Phys. 1995, 102, 4823-4831.
Hans Riesen, Lynne Wallace and Elmars Krausz; "Localised 3 MLCT States of [Ru(bpy) 3-x (phen) x ] 2+ (x=0 to 3) in Racemic [Zn(bpy) 3 ](ClO 4 ) 2." Chem. Phys. Lett. 1994, 228, 605-609.
Lynne Wallace and D. Paul Rillema; "Photophysical Properties of Rhenium(I) Tricarbonyl Complexes Containing Alkyl- and Aryl-Substituted Phenanthrolines as Ligands." Inorg. Chem. 1993, 32, 3836-3843.
Hans Riesen, Elmars Krausz and Lynne Wallace; "Hole-Burning and Luminescence Line Narrowing in [IrCl 2 (5,6-Me 2 phen) 2 ] + . A Strongly Perturbed 3 LC State." J. Phys. Chem. 1992, 96, 3621-3626.
Lynne Wallace, Graham A. Heath, Elmars Krausz and Grainne Moran; "Pathological Luminescence Characteristics of cis-[Ir(bpy) 2 Cl 2 ] +." Inorg. Chem. 1991, 30, 347-349.
Manfred Bochmann, Colin S. Creaser and Lynne Wallace; "Nickel Catalysed Cross-Coupling Reactions of Grignard Reagents with Di-, Tri- and Polychlorobiphenyls." J. Mol. Catal. 1990, 60, 343-350.
Conference Papers/Presentations
L. Wallace, C. Underwood. M. Cronin, A. Day, A. Larsson and A. Willis; PARARI 2007 (8th Australian Explosives Ordnance Symposium), Melbourne, Australia. “Electrolytic Treatment of NTO Wastewaters and Electrosynthesis of a New High-Nitrogen Compound.”
M. Cronin, L. Wallace, A. Day and C. Woodward; CONNECT 2005 (12th Royal Australian Chemical Society Convention), Sydney, Australia.“Electrolytic Mineralisation of the Explosive NTO in Wastewaters Remediation.”
R. Blanch, S. Groves , B. Douglass, L. Wallace and A. Day
PARARI 2003: 6th Australian Explosive Ordnance Symposium
“The Chemical Mineralisation of NTO in Aqueous Solution.”
H. Riesen and L. Wallace, IUPAC International Conference; Brisbane, Australia; July 2001 "Fluorescence line-narrowing and non-photochemical spectral hole-burning in [Cr(terpy) 2 ] 3+."
L. Wallace, M. Campbell, T. Donnelly, S. Cooper, W. E. Smith, and R. E. Lacey. European Union Symposium: Fighting Crime Through Technology; London, UK; March 1998. "Detection of Explosives by Surface-Enhanced Resonance Raman Spectroscopy."
D. Paul Rillema, L. Wallace and Clifton Woods. Proceedings of the Nineteenth DOE Solar Photochemistry Research Conference, 1995, 3-5, Brookhaven Natl. Lab., USA. “Mixed-metal multielectron photocatalysts for solar energy conversion.”
H. Riesen, L. Wallace and E. Krausz. 1st Australian Conference on Vibrational Spectroscopy, Sydney, Australia, Feb. 1995; "Strong Vibrational Coupling of Spectator Ligands in the Charge-Transfer Luminescence of [Ru(bpy) 3-x (bpdz) x ] 2+ (bpdz=3,3'-bipyridazine)."
L. Wallace and D. P. Rillema. 44th Southeastern - 26th Middle Atlantic Regional Meeting of the American Chemical Society, Arlington, Virginia, USA, Dec. 1992; "The Photophysical Properties of Re(I) Tricarbonyl Complexes Containing Alkyl- and Aryl-Substituted Phenanthroline Ligands."
G. A. Heath and L. Wallace. Inorganic Chemistry '91 (Conference of the RACI Inorganic Division and Inorganic and Organometallic Specialist Group of the NZCI), Hamilton, New Zealand, Jan. 1991; "Optical and Electrochemical Studies on New Polypyridyl Complexes of Ir(III)."
M. A. Bennett, C. M. Duff, G. A. Heath, D. Rasmussen and L. Wallace. XXVII International Conference on Coordination Chemistry, Broadbeach, Queensland, Australia, 1989; "Electrochemistry and Electronic Spectra of Ruthenium bis-Acetylacetonato Complexes Ru(acac) 2 L 2 : Generation of Ru(III) Alkene Complexes."