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The focus of our research group lies in the understanding of ions using mass spectrometry and laser spectroscopy. By combining gas phase techniques such as ion mobility mass spectrometry with electronic spectroscopy, we are able to characterize the structure and intramolecular behavior of specific conformers upon photoexcitation.
If you are interested in the details of our experiments click on the figures below. Of course, you are welcome to contact us for more information or to arrange a visit to our laboratory.
Photoisomerisation action spectroscopy
Electronic spectroscopy of gas-phase ions
We explore the photoisomerisation of molecular ions as they drift through gas. A packet of molecular ions is propelled by an electric field through buffer gas (N2, He or Ar). The ions’ drift speed depends on their size and shape with more compact ions undergoing fewer collisions and traversing the cell more rapidly than larger, extended ions. Therefore, peaks in the arrival time distribution (ATD) can be connected with particular molecular conformations, aided by theoretical predictions of ion mobilities.
We use resonant excitation of molecular ions by tunable laser radiation to modify the ions’ effective “size”, through a change either in their electronic state or conformation. The laser-modifed ions interact differently with the buffer gas molecules and so arrive at the detector either earlier or later than ions that have not absorbed light. By measuring the ATD as a function of laser wavelength one can obtain a photoisomerisation action spectrum of the molecular ions.
The machine is essentially a conventional ion mobility spectrometer with provision for a laser beam to overlap the drifting ions coaxially or transversely. Electrosprayed ions pass through a heated transfer capillary and accumulate in the first ion funnel. An electrostatic ion gate periodically injects ion bunches into the drift section filled with low pressure nitrogen or He gas (P=5-15 Torr) where the ions are subjected to a drift field of 40 V/cm. Following the drift region the ions are collected by a second ion funnel, before passing through a small orifice, an octopole ion guide, quadrupole mass filter, and finally being sensed by an ion detector. The ions can either be irradiated by a transverse laser beam immediately after the first ion gate or halfway through the drift region after a second ion gate (used to mobility-select bunches of ions), or coaxially in the middle section of the drift region. Irrespective of where photoexcitation occurs, a photo-induced change in ion conformation and drift mobility results in spatial and temporal separation of the photo-isomer ions from the parent ions over the remaining section of the drift region.
The apparatus
We study ions of interest using a custom built tandem mass spectrometer. Charged complexes, formed through either laser ablation or electron impact, are cooled supersonically and mass selected in the first quadrupole mass filter (QMF1), then travel through the bender to the octopole ion guide, where they are irradiated with tunable light. Top: schematic diagram of the apparatus. Bottom: pictures of the experimentally measured electronic spectra. See publications for further details.
We expose complexes and bare cations, such as H2C3H+-Ne, H2C4H+-Ar, H2C4H3+ to tunable UV radiation, which promotes their fragmentation. By monitoring the resulting photofragment as a function of OPO wavelength we can obtain their electronic spectrum. Examples of resonance enhanced photodissociation (REPD) spectra for H2C3H+, H2C4H+, and H2C4H3+ are shown in the figure below.
2019
- G. Muller, K.J. Catani, M.S. Scholz, U. Jacovella, N. I. Bartlett, E.J. Bieske
Electronic Spectra of Diacetylene Cations (HC4H+) Tagged with Ar and N2
J. Phys. Chem. A, Just Accepted - J.N. Bull, J.T. Buntine, M.S. Scholz, E. Carrascosa, L. Giacomozzi, M.H. Stockett, E.J. Bieske
Photodetachment and Photoreactions of Substituted Naphthalene Anions in a Tandem Ion Mobility Spectrometer
Faraday Discuss. 217, 34, 2019 - U. Jacovella, G. da Silva, E.J. Bieske
Unveiling New Isomers and Rearrangement Routes on the C7H8+ Potential Energy Surface
J. Phys. Chem. A 123, 823, 2019
2018
- U. Jacovella, G. Muller, K.J. Catani, N.I. Bartlett, E.J. Bieske
Electronic Spectra of the Triacetylene Cation (HC6H+) and Protonated Triacetylene (HC6H2+) Tagged with Ar
Aust. J. Chem. 72, 260, 2018 - J.N. Bull, E. Carrascosa, L. Giacomozzi, E.J. Bieske, M.H. Stockett
Ion mobility action spectroscopy of flavin dianions reveals deprotomer-dependent photochemistry
Phys. Chem. Chem. Phys. 20, 19672, 2018 - J.N. Bull, M.S. Scholz, E. Carrascosa, G. da Silva, E.J. Bieske
Double Molecular Photoswitch Driven by Light and Collisions
Phys. Rev. Lett. 120, 223002, 2018 - E. Carrascosa, J.N. Bull, M.S. Scholz, N.J.A. Coughlan, S. Olsen, U. Wille, E.J. Bieske
Reversible Photoisomerization of the Isolated Green Fluorescent Protein Chromophore
J. Phys. Chem. Lett. 9, 2647, 2018 - M.S. Scholz, J.N. Bull, E. Carrascosa, B.D. Adamson, G.K. Kosgei, J. Rack, E.J. Bieske
Linkage Photoisomerization of an Isolated Ruthenium Sulfoxide Complex: Sequential versus Concerted Rearrangement
Inorg. Chem. 57, 5701, 2018 - B.L.J. Poad, A.T. Maccarone, H. Yu, T.W. Mitchell, E.M. Saied, C. Arenz, T. Hornemann, J.N. Bull, E.J. Bieske
Differential-Mobility Spectrometry of 1-Deoxysphingosine Isomers: New Insights into the Gas Phase Structures of Ionized Lipids
Anal. Chem. 90, 5343, 2018 - J.N. Bull, E. Carrascosa, N. Mallo, M.S. Scholz, G. da Silva, J.E. Beves, E.J. Bieske
Photoswitching an Isolated Donor–Acceptor Stenhouse Adduct
J. Phys. Chem. Lett. 9, 665, 2018 - J.N. Bull, M.S. Scholz, E. Carrascosa, E.J. Bieske
From E to Z and back again: reversible photoisomerisation of an isolated charge-tagged azobenzene
Phys. Chem. Chem. Phys. 20, 509, 2018
2017
- M.S. Scholz, J.N. Bull, N.J.A. Coughlan, E. Carrascosa, B.D. Adamson, E.J. Bieske
Photoisomerization of Protonated Azobenzenes in the Gas Phase
J. Phys. Chem. A 121, 6413, 2017 - K.J. Catani, G. Muller, P. Jusko,, E.J. Bieske, C. Jouvet
Electronic spectrum of the protonated diacetylene cation ( H2C4H+)
J. Chem. Phys. 147, 084302, 2017 - J.N. Bull, N.J.A. Coughlan, E.J. Bieske
Protomer-Specific Photochemistry Investigated Using Ion Mobility Mass Spectrometry
J. Phys. Chem. A 121, 6021, 2017 - S.F. Lim, B.L. Harris, G.N. Khairallah, E.J. Bieske, P. Maître, G. da Silva, B.D. Adamson, M.S. Scholz, N.J.A. Coughlan, R.A.J. O’Hair, M. Rathjen, D. Stares, J. M. White
Seleniranium Ions Undergo π-Ligand Exchange via an Associative Mechanism in the Gas Phase
J. Org. Chem. 82, 6289, 2017 - K.J. Catani, G. Muller, G. da Silva, E.J. Bieske
Electronic spectrum and photodissociation chemistry of the linear methyl propargyl cation H2C4H3+
J. Chem. Phys. 146, 044307, 2017 - C. Richie, G. Vamvounis, H. Soleimaninejad, T.A. Simth, E.J. Bieske, V. Dryza
Photochrome-doped organic films for photonic keypad locks and multi-state fluorescence
Phys. Chem. Chem. Phys. 19, 19984, 2017 - G.D. O’Connor, B. Chan, J.A. Sanelli, K.M. Cergoi, V. Dryza, R.J. Payne, E.J. Bieske, L. Radom, T.W. Schmidt
Hydrogen-adduction to open-shell graphene fragments: spectroscopy, thermochemistry and astrochemistry
Chem. Sci. 8, 1186, 2017 - J.N. Bull, E. Carrascosa, M.S. Scholz, N.J.A. Coughlan, E.J. Bieske
Online measurement of photoisomerisation efficiency in solution using ion mobility mass spectrometry
Analyst 142, 2100, 2017 - J.N. Bull, M.S. Scholz, N.J.A. Coughlan, E.J. Bieske
Isomerisation of an intramolecular hydrogen-bonded photoswitch: protonated azobis(2-imidazole)
Phys. Chem. Chem. Phys. 19, 12776, 2017 - D.C. Georgiou, M.A. Haghighatbin, C.F. Hogan, M.S. Scholz, J.N. Bull, E.J. Bieske, D.J. Wilson, J.L. Dutton
A Strong cis-Effect in an Imidazole-Imidazolium-Substituted Alkene
Angew. Chem. Int. Ed. 56, 8473, 2017
2016
- J.N. Bull, M.S. Scholz, N.J.A. Coughlan, A. Kawai, E.J. Bieske
Monitoring Isomerization of Molecules in Solution Using Ion Mobility Mass Spectrometry
Anal. Chem. 88, 11978, 2016 - G.D. O’Connor, J.A. Sanelli, V. Dryza, E.J. Bieske, T.W. Schmidt
Electronic spectrum of 9-methylanthracenium radical cation
J. Chem. Phys. 144, 154303, 2016 - N.J.A Coughlan, C.M. Wallace, B.D. Adamson, E.J. Bieske
Photoisomerization of β-Ionone Protonated Schiff Base in the Gas Phase
J. Phys. Chem. A 120, 6557, 2016 -
N.J.A. Coughlan, M.S. Scholz, C.S. Hansen, A.J. Trevitt, B.D. Adamson, E.J. Bieske
Photo and Collision Induced Isomerization of a Cyclic Retinal Derivative: An Ion Mobility Study
J. Am. Soc. Mass Spectrom. 27, 1483, 2016 -
G. Vamvounis, C. Glasson, E.J Bieske, V. Dryza
Modulating electron injection from an organic dye to a titania nanoparticle with a photochromic energy transfer acceptor
J. Mater. Chem. C 4, 6215-6219, 2016 - D.G. Artiukhin, E.J. Bieske, A.A. Buchachenko
Ab Initio Characterization of the Electrostatic Complexes Formed by H2 Molecule and Cr+, Mn+, Cu+, and Zn+ Cations
J. Phys. Chem. A, 120, 5006, 2016 -
V. Dryza, T.A. Smith, E.J. Bieske
Blue to near-IR energy transfer cascade within a dye-doped polymer matrix, mediated by a photochromic molecular switch
Phys. Chem. Chem. Phys. 18, 5095, 2016
2015
Electronic spectrum of the propargyl cation (H2C3H+) tagged with Ne and N2
J. Chem. Phys. 143, 184306, 2015- P.B. Markworth,
Photoisomerization action spectroscopy: flicking the protonated merocyanine–spiropyran switch in the gas phase
Phys. Chem. Chem. Phys. 17, 25676, 2015 - V. Dryza, E.J. Bieske
Does the Triphenylamine-Based D35 Dye Sensitizer Form Aggregates within a Solar Cell?
J. Photochem. Photobiol., A 302, 35, 2015 - N. Chalyavi, K. J. Catani, J. A. Sanelli, V. Dryza, E.J. Bieske
Gas-phase Electronic Spectroscopy of the Indole Radical Cation
Mol. Phys. 113, 2086, 2015 -
V. Dryza, E.J. Bieske
Electron Injection and Energy-Transfer Properties of Spiropyran–Cyclodextrin Complexes Coated onto Metal Oxide Nanoparticles: Toward Photochromic Light Harvesting
J. Phys. Chem. C, 119, 14076, 2015 - C. S. Hansen, S. J. Blanksby, N. Chalyavi, E.J. Bieske, J.R. Reimers, and A.J. Trevitt
Ultraviolet Photodissociation Action Spectroscopy of the N-pyridinium Cation
J. Chem. Phys. 142, 014301, 2015
2014
- B.D Adamson, N.J.A. Coughlan, P. Markworth, R. E. Continetti, E.J. Bieske
An Ion Mobility Mass Spectrometer for Investigating Photoisomerization and Photodissociation of Molecular Ions
Rev. Sci. Instrum. 85, 123109, 2014 - V. Dryza, E.J. Bieske
Suppressing Forster Resonance Energy Transfer between Organic Dyes on a Co-Sensitized Metal-Oxide Surface
J. Phys. Chem. C 118, 19646, 2014 - D. G. Artiukhin, J. Klos, E. J. Bieske, A. A. Buchachenko
Interaction of the Beryllium Cation with the Molecular Hydrogen and Deuterium
J. Phys. Chem. A 118, 6711, 2014 - N.J. A. Coughlan, B.D Adamson, K. Catani, U. Wille, E.J. Bieske
Ion Mobility Unlocks the Photofragmentation Mechanism of Retinal Protonated Schiff Base
J. Phys. Chem. Lett. 5, 3195, 2014 - N.J. A. Coughlan, K. Catani, B.D Adamson, U. Wille, E.J. Bieske
Photoisomerization Action Spectrum of Retinal Protonated Schiff Base in the Gas-Phase
J. Chem. Phys. 140, 164307, 2014 -
V. Dryza, E.J. Bieske
Suppressing Förster Resonance Energy Transfer between Organic Dyes on a Cosensitized Metal Oxide Surface
J. Phys. Chem. C 118, 19646, 2014 - T. Pino, G. Feraud, Ph. Brechignac, E. J. Bieske and T. W. Schmidt
Laboratory Spectroscopy of PAHs
Proc. Int. Astron. Union 9, 247, 2014
2013
- V. Dryza, J. L. Nguyen, T-H. Kwon, W. W. H. Wong, A.B. Holmes and E. J. Bieske
Photophysics and Aggregation Effects of a Triphenylamine-Based Dye Sensitizer on Metal-Oxide Nanoparticles Suspended in an Ion Trap
Phys. Chem. Chem. Phys. 15, 20326, 2013 - N. Chalyavi, J. A. Sanelli, V. Dryza, E.J. Bieske
Electronic Spectroscopy of the 1,3-Cyclopentadiene Cation (C5H6+)
J. Phys. Chem. A 117, 11276, 2013 - B.D Adamson, N.J. A. Coughlan, G. Da Silva, E.J. Bieske
Photoisomerization Action Spectroscopy of the Carbocyanine Dye DTC+ in the Gas Phase
J. Phys. Chem. A 117, 13319, 2013 - V. Dryza, E.J. Bieske
Non-covalent Interactions between Metal Cations and Molecular Hydrogen – Spectroscopic Studies of M+-H2 Complexes
Int. Rev. Phys. Chem. 32, 559, 2013 - N. Chalyavi, V. Dryza, J. A. Sanelli, E.J. Bieske
Gas-phase Electronic Spectroscopy of the Indene Cation (C9H8+
J. Chem. Phys. 138, 224307, 2013. - B.D Adamson, N.J. A. Coughlan, R.Continetti, E.J. Bieske
Changing the Shape of Molecular Ions: Photoisomerization Action Spectroscopy in the Gas Phase
Phys. Chem. Chem. Phys. 15, 9540, 2013
2012
- E. G. Robertson, I.A. Lobo, D.J. Wilson, E.J. Bieske
A sting in the tail of flexible molecules: spectroscopic and energetic challenges in the case of p-aminophenethylamine
Phys. Chem. Chem. Phys. 14, 9219, 2012 - V. Dryza, N. Chalyavi, J. A. Sanelli, E.J. Bieske
Electronic Absorptions of the Benzylium Cation
J. Chem. Phys. 137, 204304, 2012 - V. Dryza, B.L.J. Poad, E.J. Bieske
Attaching Molecular Hydrogen to Metal Cations: Perspectives from Gas-Phase Infrared Spectroscopy
Phys. Chem. Chem. Phys. 14, 14954, 2012 - J. E. Sader, J. A. Sanelli, B.D. Adamson, J.P. Monty, X. Wei, S.A. Crawford, J.R. Friend, I. Marusic, P. Mulvaney, and E.J. Bieske
Spring Constant Calibration of Atomic Force Microscope Cantilevers of Arbitrary Shape
Rev. Sci. Instrum. 83, 103705, 2012 - B.L.J. Poad, V. Dryza, J. Klos, A.A. Buchachenko, E.J. Bieske
Properties of the B+-H2 and B+-D2 Complexes: a Theoretical and Spectroscopic Study
J. Chem. Phys. 137, 124312, 2012 - V. Dryza, J. Sanelli, E. G. Robertson, E.J. Bieske
Electronic Spectra of Gas-Phase Polycyclic Aromatic Nitrogen Heterocycle Cations: Isoquinoline+ and Quinoline+
J. Phys. Chem. A 116, 4323, 2012 - J. Sader, B. Hughes, J. Sanelli, E.J. Bieske
Effect of multiplicative noise on least-squares parameter estimation with applications to the atomic force microscope
Rev. Sci. Instrum. 83, 055106, 2012
2011
- J.E. Sader, J. Sanelli, B.D. Hughes, E.J. Bieske
Distortion in the thermal noise spectrum and quality factor of nanomechanical devices due to finite frequency resolution with applications to the atomic force microscope, Rev. Sci. Instrum. 82, 095104, 2011 - B.L.J. Poad, V. Dryza, J. Klos, A.A. Buchachenko, E.J. Bieske
Rotationally resolved infrared spectrum of the Na+-D2 complex: an experimental and theoretical study
J. Chem. Phys. 134, 214302, 2011 - V. Dryza and E.J. Bieske
Infrared spectrum of the Ag+-H2 complex: Exploring the connection between vibrational band-shifts and binding energies
J. Phys. Chem. Lett. 2, 719, 2011 - D.Wild, Z. Loh and E.J. Bieske
Infrared spectra and ab initio calculations for fluoride-acetylene clusters: F–(HCCH)n
Aust. J. Chem. 64, 1, 2011 - V. Dryza, E.J. Bieske, A.A. Buchachenko and J. Klos
Potential energy surface and rovibrational calculations for the Mg+-H2 and Mg+-D2 complexes
J. Chem. Phys. 134, 044310, 2011
2010
- V. Dryza and E.J. Bieske
Infrared spectra and density functional theory calculations for Mn+-(CH4)n (n = 1-6) clusters
Int. J. Mass Spectrom. 297, 46, 2010 - D.A. Wild, K.T. Kuwata, C.-K. Wong, J.D. Lobo, A. Deev, T.S. Schindler, M. Okumura, E.J. Bieske
Infrared spectra of mass-selected Br–(NH3)n and I–(NH3)nclusters
J. Phys. Chem. A 114, 4762, 2010 - V. Dryza, B.L.J. Poad and E.J. Bieske
Mixing laser spectroscopy and mass spectrometry – Infrared spectra of metal cation-hydrogen complexes
Eur. J. Mass Spectrom. 16, 415, 2010
2009
- B.D. Adamson, J.E. Sader and E.J. Bieske
Photoacoustic detection of gases using microcantilevers
J. App. Phys. 106, 114510, 2009 - V. Dryza, B.L.J. Poad and E.J. Bieske
Structure and properties of the Zn+-D2 complex
J. Chem. Phys. 131, 224304, 2009 - V. Dryza and E.J. Bieske
The Cr+-D2 cation complex: accurate experimental dissociation energy, intermolecular bond length and vibrational parameters
J. Chem. Phys. 131, 164303, 2009 - V. Dryza, B.L.J. Poad and E.J. Bieske
A spectroscopic study of the benchmark Mn+-H2 complex
J. Phys. Chem. 113, 6044, 2009 - A.J. Trevitt, P.J. Wearne and E.J. Bieske
The coalescence of trapped polystyrene spheres
J. Aerosol Sci. 40, 431, 2009 - V. Dryza, B.L.J. Poad and E.J. Bieske
Infrared spectra of mass-selected Mg+-H2 and Mg+-D2 complexes
J. Phys. Chem. 113, 199, 2009
2008
- B.L.J. Poad, P.J. Wearne, E.J. Bieske, A.A. Buchachenko, D. Bennett, J. Klos and M. H. Alexander
The Na+-H2 cation complex: rotationally resolved infrared spectrum, potential energy surface and rovibrational calculations
J. Chem. Phys. 129, 184306, 2008 - V. Dryza, B.L.J. Poad and E.J. Bieske
Attachment of molecular hydrogen to an isolated boron cation: an infrared and ab initio study
J. Am. Chem. Soc. 130, 12986, 2008 - B.L.J. Poad, C.D. Thompson and E.J. Bieske
Infrared spectra of mass-selected Al+-(CH4)n n=1-6 clusters
Chem. Phys. 346, 176, 2008
2007
- T. A. Smith, A. J. Trevitt, P. J. Wearne, E. J. Bieske, L. McKimmie and D. Bird.
Morphology-dependent resonance emission from individual micron-sized particles
Springer Series on Fluorescence: Fluorescence of Supermolecules, Polymers, and Nanosystems,
pages 415–429, (Springer, Dordrecht) 2007 - C. Emmeluth, B.L.J. Poad, C.D. Thompson, G.H. Weddle, E.J. Bieske, A.A. Buchachenko, T.A. Grinev and J. Klos
The Al+-H2 cation complex: infrared spectrum, potential energy surface and rovibrational calculations
J. Chem. Phys. 127, 164310, 2007 - C. Emmeluth, B.L.J. Poad, C.~D. Thompson and E.J. Bieske
Interactions between the chloride anion and aromatic molecules: Infrared spectra of the Cl–C6H5CH3, Cl–C6H5NH2 and Cl–C6H5OH complexes
J. Phys. Chem. A 111, 7322, 2007 - C. Emmeluth, B.L.J. Poad, C.D. Thompson, G.H. Weddle and E.J. Bieske
Infrared spectra of the Li-(H2)n (n=1-3) cation complexes
J. Chem. Phys. 126, 204309, 2007 - A.J. Trevitt, P.J. Wearne and E.J. Bieske
Calibration of a quadrupole ion trap for particle mass spectrometry
Int. J. Mass Spectrom. 262, 241, 2007
2006
- Z.M. Loh, R.L. Wilson, D.A. Wild, E.J. Bieske, J.M. Lisy, B. Njegic and M.S. Gordon.
Infrared spectra and ab initio calculations for the F–(CH4)n (n=1-8) anion complexes
J. Phys. Chem. A 110, 13736, 2006 - T.A. Grinev, A.A. Buchachenko, J. Klos and E. J. Bieske
Ab initio potential energy surface, infrared spectra, and dynamics of the ion-molecule complexes between Br- and H2, D2, and HD
J. Chem. Phys. 125:114313, 2006 - C.D. Thompson, B.L.J. Poad, C. Emmeluth and E. Bieske
Infrared spectra of Cl–(C6H6)m m=1, 2
Chem. Phys. Lett. 428, 18, 2006 - A. Dzhonson, D. Gerlich, E.J. Bieske and J. P. Maier
Apparatus for the study of electronic spectra of collisionally cooled cations: para-dichlorobenzene
J. Mol. Struct. 795, 93, 2006 - C.D. Thompson, C. Emmeluth, B.L.J. Poad, G.H. Weddle and E.J. Bieske
Rotationally resolved infrared spectrum of the Li+-D2 cation complex
J. Chem. Phys. 125, 044310, 2006 - A.J. Trevitt, P.J. Wearne, E.J. Bieske and M.D. Schuder
Observation of nondegenerate cavity modes for a distorted polystyrene microsphere
Opt. Lett. 31, 2211, 2006
2005
- R.L. Wilson, Z.M. Loh, D.A. Wild, C.D. Thompson, E.J. Bieske, M.D. Schuder and J.M. Lisy
Infrared spectra of the Cl–C2H4 and Br–C2H4 anion dimers
Phys. Chem. Chem. Phys. 7, 3419, 2005 - Z.M. Loh, R.L. Wilson, D.A. Wild, E.J. Bieske and M.S. Gordon
Infrared spectra and ab initio calculations for the Cl–(CH4)n (n=1-10) anion clusters
J. Phys. Chem. A 109, 8481, 2005
2004
- D.A. Wild and E.J. Bieske
Infrared spectrum of the I–D2 anion complex
J. Chem. Phys. 121, 12276, 2004 - Z.M. Loh, R.L. Wilson, D.A. Wild, E.J. Bieske and M.S. Gordon
Structures of F–(CH4)n and Cl–(CH4)n (n = 1,2) anion clusters elucidated through ab initio calculations and infrared spectra
Aust. J. Chem. 57, 1157, 2004 - D.A. Wild, R.L. Wilson, Z.M. Loh and E.J. Bieske
The infrared spectrum of the F–H2 anion complex
Chem. Phys. Lett. 393, 517, 2004 - R.L. Wilson, Z.M. Loh, D.A. Wild, E.J. Bieske, and A.A. Buchachenko
Isomeric interconversion in the linear Cl–HD anion complex
J. Chem. Phys. 121, 2085, 2004
2003
- E.J. Bieske
Spectroscopic studies of anion complexes and clusters: a microscopic approach to understanding anion solvation
Chem. Soc. Rev. 32, 231, 2003 - D.A. Wild and E.J. Bieske.
Infrared investigations of negatively charged complexes and clusters
Int. Rev. Phys. Chem. 22, 129, 2003 - A.A. Buchachenko, T. A. Grinev, J.Klos, E.J. Bieske, M.M. Szczesniak and G.Chalasinski
Ab initio potential energy and dipole moment surfaces, infrared spectra, and vibrational predissociation dynamics of the 35Cl-…H2/D2 complexes
J. Chem. Phys. 119, 12931, 2003 - Z.M. Loh, R.L. Wilson, D.A. Wild, E.J. Bieske and A.Zehnacker
Cl–C6H6, Br–C6H6, and I–C6H6, anion complexes: Infrared spectra and ab initio calculations
J. Chem. Phys. 119, 9559, 2003 - D.A. Wild, Z.M. Loh, R.L. Wilson and E.J. Bieske
Locating and confirming the C-H stretch bands of the halide-acetylene anion complexes using argon predissociation spectroscopy
Chem. Phys. Lett. 369, 684, 2003
2002
- D.A. Wild, Z.M. Loh and E.J. Bieske
Infrared spectra of the F–CH4 and Br–CH4 anion complexes
Int. J. Mass Spectrom. 220, 273, 2002 - D.A. Wild, Z.M. Loh, R.L. Wilson and E.J. Bieske
Br–H2 and I–H2 anion complexes: Infrared spectra and radial intermolecular potential energy curves
J. Chem. Phys. 117, 3256, 2002 - D.A. Wild, P.S. Weiser, Z.M. Loh and E.J. Bieske.
Infrared spectra of size selected Cl–(D2)n and F–(D2)n anion clusters
J. Phys. Chem. A 106, 906, 2002
2001
- D.A. Wild, P.S. Weiser, E.J. Bieske and A.Zehnacker
The 35Cl–H2 and 35Cl–D2 anion complexes: Infrared spectra and radial intermolecular potentials
J. Chem. Phys. 115, 824, 2001 - D.A. Wild, P.S. Weiser and E.J. Bieske
Rotationally resolved infrared spectrum of the Br–D2 anion complex
J. Chem. Phys. 115, 6394, 2001
2000
- E.J. Bieske and O. Dopfer
High-resolution spectroscopy of cluster ions
Chem. Rev. 100, 3963, 2000 - D.A. Wild, P.J. Milley, Z.M. Loh, P.S. Weiser and E.J. Bieske
Infrared spectra of Br–(C2H2)n complexes
Chem. Phys. Lett. 323, 49, 2000 - D.A. Wild, P.J. Milley, Z.M. Loh, P.P. Wolynec, P.S. Weiser and E.J. Bieske
Structural and energetic properties of the Br–C2H2 anion complex from rotationally resolved mid-infrared spectra and ab initio calculations
J. Chem. Phys. 113, 1075, 2000 - D.A. Wild, R.L. Wilson, P.S. Weiser and E.J. Bieske
Rotationally resolved infrared spectrum of the Cl–H2 anion complex
J. Chem. Phys. 113, 10154, 2000 - D.A. Wild, Z.M. Loh, P.P. Wolynec, P.S. Weiser and E.J. Bieske
The Cl–CH4 anion dimer: mid infrared spectrum and ab initio calculations
Chem. Phys. Lett. 332, 531, 2000 - P.S. Weiser, D.A. Wild, P.P. Wolynec and E.J. Bieske
Infrared and ab initio study of the chloride-ammonia anion complex
J. Phys. Chem. A 104, 2562, 2000
1999
- P.S. Weiser, D.A. Wild and E.J. Bieske
Infrared spectra of I–(C2H2)n anion complexes
Chem. Phys. Lett. 299, 303, 1999 - P.S. Weiser, D.A. Wild and E.J. Bieske
Infrared spectra of Cl–(C2H2)n (n=1-9) anion clusters: Spectroscopic evidence for solvent shell closure
J. Chem. Phys. 110, 9443, 1999
1998
- S.A. Nizkorodov, M. Meuwly, J.P. Maier, O. Dopfer and E.J. Bieske
Infrared predissociation spectra of Nen-HN2+ clusters (n=1-5)
J. Chem. Phys. 108, 8964, 1998 - S.A. Nizkorodov and E.J. Bieske
Photofragmentation dynamics of the (N2O)2 + and (N2O)3+ clusters: fragment N2O+ A-X spectra
Chem. Phys. 239, 369, 1998
1997
- S. A. Nizkorodov, Y. Spinelli, E. J. Bieske, J. P. Maier and O. Dopfer
Dissociation energy of the Ar-HN2+ complex
Chem. Phys. Lett. 265, 303, 1997 - M. Meuwly, S.A. Nizkorodov, E.J. Bieske, J.P. Maier and O. Dopfer
Reply to the comment on The v3 infrared spectrum of the He-NH4+ complex
Chem. Phys. Lett. 270, 252, 1997 - O. Dopfer, S.A. Nizkorodov, M. Meuwly, E.J. Bieske and J.P. Maier
Microsolvation of the ammonium ion in argon: Infrared spectra of NH4+-Arn complexes (n=1-7)
Int. J. Mass Spectrom. Ion Processes 167/168, 637, 1997
1996
- T. Ruchti, T. Speck, J.P. Connelly, E.J. Bieske, H.Linnartz and J.P. Maier
Rotationally resolved infrared absorption spectrum of N4+
J. Chem. Phys. 105, 2591, 1996 - T. Ruchti, A. Rohrbacher, T. Speck, J. P. Connelly, E. J. Bieske and J. P. Maier
An electron impact ionization slit-jet apparatus for laser absorption spectroscopy
Chem. Phys. 209, 169, 1996 - S.A. Nizkorodov, O. Dopfer, M. Meuwly, J.P. Maier and E.J. Bieske
Mid-infrared spectra of the proton-bound complexes Nen-HCO+ (n=1,2)
J. Chem. Phys. 105, 1770, 1996 - M. Meuwly, S.A. Nizkorodov, J.P. Maier, and E.J. Bieske
Mid-infrared spectra of He-HN2+ and He2-HN2+
J. Chem. Phys. 104, 3876, 1996 - O. Dopfer, S.A. Nizkorodov, M. Meuwly, E.J. Bieske and J.P. Maier.
The v3 infrared spectrum of the He-NH4+ complex
Chem. Phys. Lett. 260, 545, 1996 - E.J. Bieske, S.A. Nizkorodov, O. Dopfer, J.P. Maier, R.J. Stickland, B.J. Cotterell and B.J. Howard
Observation of the infrared spectrum of the v3 band of the argon-ammonium ionic complex
Chem. Phys. Lett. 250, 266, 1996
1995
- E.J. Bieske, S.A. Nizkorodov, F.R. Bennett, and J.P. Maier
Combined infrared and ab initio study of the H2-HN2+ complex
Int. J. Mass Spectrom. Ion Processes, 149/150, 167, 1995 - E.J. Bieske, S.A. Nizkorodov, F.R. Bennett, and J.P. Maier
The infrared spectrum of the H2-HCO+ complex
J. Chem. Phys. 102, 5152, 1995 - S.A. Nizkorodov, O. Dopfer, T. Ruchti, M. Meuwly, J.P. Maier and E.J. Bieske
Size effects in cluster infrared spectra: the v1 band of Arn-HCO+ (n=1-13)
J. Phys. Chem. 99, 17118, 1995 - S.A. Nizkorodov, J.P. Maier, and E.J. Bieske
The infrared spectrum of He-HCO+
J. Chem. Phys. 103, 1297, 1995 - S.A. Nizkorodov, J.P. Maier and E.J. Bieske
The infrared spectrum of the N2H+-He ion-neutral complex
J. Chem. Phys. 102, 5570, 1995
1994
- E.J. Bieske, S.Nizkorodov, A. Friedmann, and J.P. Maier.
Metastable decay of N2+-Hen (v=1) (n=1-6) clusters
Int. J. Mass Spectrom. Ion Processes, 135, 19, 1994. - E.J. Bieske, A.M. Soliva, A.Friedmann, and J.P. Maier.
The B-X electronic spectra of N2+-Nen (n=1-8)
J. Chem. Phys. 100, 4156, 1994 - A.A. Friedmann, S. Nizkorodov, E.J. Bieske, and J.P. Maier.
Discrete UV absorption by N3+-(N2)n clusters
Chem. Phys. Lett. 224, 16, 1994 - A. Friedmann, A.M. Soliva, S.A. Nizkorodov, E.J. Bieske, and J.P. Maier.
A 3Πu – X 3Σg electronic spectrum of N3+
J. Phys. Chem. 98, 8896, 1994 - D. Lessen, S. Nizkorodov, P. Knupfer, T. Ruchti, E.J. Bieske, and J.P. Maier.
Rotational distribution of N2+ fragments from 355 nm photolysis of N4+
Chem. Phys. Lett. 226, 187, 1994
1993
- E.J. Bieske
Photodissociation of nitrogen ionic clusters (N2)n+ (n=2-7): Branching ratios for formation of N2+ and N4+, and N2+ fragment vibrational excitation
J. Chem. Phys. 99, 8672, 1993 - E.J. Bieske
N4+ ion photodissociation: charge exchange of N2+ ion fragments with argon
J. Chem. Phys. 98, 8537, 1993
1992
- E.J. Bieske, A.M. Soliva, A.Friedmann, and J.P. Maier.
Photoinitiated charge transfer in N2O+-Ar
J. Chem. Phys. 96, 7535, 1992 - E.J. Bieske, A.M. Soliva, A.Friedmann, and J.P. Maier.
Vibrational predissociation lifetime of N2+-He (X, v = 1)
J. Chem. Phys. 96, 4035, 1992 - E.J. Bieske, A.M. Soliva, A.Friedmann, and J.P. Maier.
Electronic spectra of N2+-Hen (n=1,2,3)
J. Chem. Phys. 96, 28, 1992
1991
- E.J. Bieske, A.M. Soliva, and J.P. Maier.
The B-X electronic spectrum of the N2+-Ne complex
J. Chem. Phys. 94, 4749, 1991 - E.J. Bieske, A.S. Uichanco, M.W. Rainbird, and A.E.W. Knight.
Mass selected resonance enhanced multiphoton ionization spectroscopy of aniline-Arn (n=3,4,5,…) van der Waals complexes
J. Chem. Phys. 94, 7029, 1991 - E.J. Bieske, M.W. Rainbird, and A.E.W. Knight.
The van der Waals vibrations of aniline-Ar2 in the S1 electronic state
J. Chem. Phys. 94, 7019, 1991 - A.M. Soliva, E.J. Bieske, and J.P. Maier.
The A-X electronic transition of the N2O+-Ne cluster
Chem. Phys. Lett. 179, 247, 1991
1990
- E.J. Bieske, A.Soliva, M.A. Welker, and J.P. Maier.
The B-X electronic spectrum of N2+-He
J. Chem. Phys. 93, 4477, 1990 - E.J. Bieske, R.I. McKay, F.R. Bennett, and A.E.W. Knight.
Photodissociation spectroscopy of aromatic-rare gas cluster ions: low frequency vibrations in p-difluorobenzene+.Ar
J. Chem. Phys. 92, 4620, 1990 - E.J. Bieske, M.W. Rainbird, and A.E.W. Knight.
Resonance-enhanced photodissociation spectra of cation-rare gas complexes: the forbidden B-X transition of chlorobenzene-argon and fluorobenzene-argon cations
J. Phys. Chem. 94, 3962, 1990 - R.I. McKay, E.J. Bieske, I.M. Atkinson, F.R. Bennett, A.J. Bradley, M.W. Rainbird, A.B. Rock, A.S. Uichanco, and A.E.W. Knight.
Spectroscopy and structure of aromatic-rare gas cluster ions
Aust. J. Phys. 43, 683, 1990
1989
- E.J. Bieske, M.W. Rainbird, I.M. Atkinson, and A.E.W. Knight.
Stretch-bend coupling between van der Waals modes in the S1state of substituted benzene-argon complexes
J. Chem. Phys. 91, 752, 1989 - E.J. Bieske, M.W. Rainbird, and A.E.W. Knight.
Suppression of fragment contributions to mass-selected resonance enhanced multiphoton ionization spectra of van der Waals clusters
J. Chem. Phys. 90, 2068, 1989.
Principle investigator
Professor Evan Bieske
evanjb@unimelb.edu.au
Postdoctoral researchers
Dr. Ugo Jacovella
ugo.jacovella@unimelb.edu.au
PhD Students
Michael Scholz
mscholz@student.unimelb.edu.au
Giel Muller
gmuller@student.unimelb.edu.au
Jack Buntine
jbuntine@student.unimelb.edu.au
MSc Students
Nastasia Bartlett
nbartlett@student.unimelb.edu.au
Research Assistants
Luke Weston
Sam Scholten
Previous members
Eduardo Carrascosa (postdoc)
James Bull (postdoc)
Katherine Catani (PhD)
Neville Coughlan (PhD)
Brian Adamson (PhD)
Peter Markworth (MSc)
Viktoras Dryza (postdoc)
Nahid Chalyavi (postdoc)
Julian Sanelli (Hons)
Jessica Nguyen (MSc)
Samuel Pinches
Philip Wearne (PhD)
Berwyck Poad (PhD)
Zoe Loh (PhD)
Chris Thompson (postdoc)
Corinna Emmeluth (PhD)
Rosemary Wilson (PhD)
Adam Trevitt (PhD)
Duncan Wild (PhD)
Previous visitors
Christina Kjær
Linda Giacomozzi
Mark Stockett
Sergey Nizkorodov
Giovanni Meloni
Bob Continetti
Francois Amar
Gary Weddle
Jim Lisy
Mike Schruder
09/07/2018 — Flavin dianion paper accepted for publication in Phys. Chem. Chem. Phys.
16/06/2018 — Congrats Katherine Catani on completing her Ph.D. titled — Electronic spectroscopy of gas-phase ions
01/06/2018 — Congo red paper accepted for publication in Phys. Rev. Lett. — see publications list.
07/05/2018 — Ruthenium sulfoxide paper accepted for publication in J. Inorg. Chem. — see publications list.
03/05/2018 — GFP paper accepted for publication in J. Phys. Chem. Lett — see publications list.
12/03/2018 — Ugo Jacovella joins the group!
Professor Evan Bieske 
Head, School of Chemistry
The University of Melbourne
Parkville 3010 (VIC), Australia
Phone: +61-8344-7137
Email: evanjb@unimelb.edu.au
If you want to know more or have any questions about research in our group, please feel free to drop by or contact us. Lab member email addresses can be found on the humanoids page
Open Positions
We continuously have openings for research projects for M.Sc. and Ph.D. students. For details or if you wish to visit the labs please contact Prof. Evan Bieske.