The formation of negative ions and neutrals in the gas phase. Structure, reactivity and mechanism. Mass spectrometry is an analytical technique used to provide information concerning the structure of a chemical compound: it is particularly useful when dealing with small amounts of biologically important molecules. It is also a facility in which charged species can be converted into transient neutrals. This project will (i) produce information about negative ion fragmentations in order to extend ....The formation of negative ions and neutrals in the gas phase. Structure, reactivity and mechanism. Mass spectrometry is an analytical technique used to provide information concerning the structure of a chemical compound: it is particularly useful when dealing with small amounts of biologically important molecules. It is also a facility in which charged species can be converted into transient neutrals. This project will (i) produce information about negative ion fragmentations in order to extend the applicability of analytical negative-ion mass spectrometry, (ii) form neutral molecules and related species which are found in stellar dust clouds and investigate their chemistry, and (iii) train graduates in ion chemistry to the highest international standards.Read moreRead less
Reaction transition states of halide-cluster complexes via velocity-map imaging of photoelectrons. This study will investigate the transition point between the reactants and products of a chemical reaction using a novel photoelectron imaging technique, velocity-map imaging. It is this region of chemical reactions that is the least understood. By combining the use of weakly bound negatively charged clusters and laser photodetachment of these clusters, information can be gleaned about these transi ....Reaction transition states of halide-cluster complexes via velocity-map imaging of photoelectrons. This study will investigate the transition point between the reactants and products of a chemical reaction using a novel photoelectron imaging technique, velocity-map imaging. It is this region of chemical reactions that is the least understood. By combining the use of weakly bound negatively charged clusters and laser photodetachment of these clusters, information can be gleaned about these transition states. The technique will be applied to an important class of halide-cluster complexes that form a set of prototypical reactions. These species also play important roles ranging from ozone depletion through to industrial chemistry.Read moreRead less
Gas phase studies of reactive organic radicals: a novel approach using mass spectrometry. Radical reactions play a crucial role in a range of important chemistries, ranging from the formation of photochemical smog to the accumulation of pathogens in the ageing body. Despite their importance, the reactions of many radicals are poorly understood because of current experimental limitations. In this project we propose to develop two new and broadly applicable techniques for probing radical chemistry ....Gas phase studies of reactive organic radicals: a novel approach using mass spectrometry. Radical reactions play a crucial role in a range of important chemistries, ranging from the formation of photochemical smog to the accumulation of pathogens in the ageing body. Despite their importance, the reactions of many radicals are poorly understood because of current experimental limitations. In this project we propose to develop two new and broadly applicable techniques for probing radical chemistry in the gas phase via novel applications of mass spectrometry. Combined with quantum chemical calculations and state-of-the-art thermodynamic measurements these methods will provide a comprehensive understanding of the reactivity of key organic radicals.Read moreRead less
Molecular signatures of complex photodissociation reactions. All energy on earth comes from the sun, either directly (e.g photosynthesis) or indirectly (e.g fossil fuels). Photochemistry is the study of how this light is absorbed and what happens to a molecule afterwards. Despite significant experimental and theoretical advances in the past decade (some in our lab), scientists still cannot predict the outcomes of most photochemical reactions. In this project we will determine the reactivity o ....Molecular signatures of complex photodissociation reactions. All energy on earth comes from the sun, either directly (e.g photosynthesis) or indirectly (e.g fossil fuels). Photochemistry is the study of how this light is absorbed and what happens to a molecule afterwards. Despite significant experimental and theoretical advances in the past decade (some in our lab), scientists still cannot predict the outcomes of most photochemical reactions. In this project we will determine the reactivity of several small, fundamental organic molecules. Not only are these molecules pollutants around our cities, but discovery of how they react in the presence of light will allow us to understand and predict the photochemistry of a much wider range of organic species.Read moreRead less
Photodissociation Dynamics of Radicals and Molecules. Photodissociation dynamics involves studying fundamental chemical processes that underpin all chemical reactivity. We address three of the important unanswered questions in this field: i) how do the lessons learned from small molecules transfer to larger molecules? ii) can one control chemical reactivity by selecting specific states of the reactant?; and iii) are the dynamics of radicals fundamentally different to stable molecules? We wi ....Photodissociation Dynamics of Radicals and Molecules. Photodissociation dynamics involves studying fundamental chemical processes that underpin all chemical reactivity. We address three of the important unanswered questions in this field: i) how do the lessons learned from small molecules transfer to larger molecules? ii) can one control chemical reactivity by selecting specific states of the reactant?; and iii) are the dynamics of radicals fundamentally different to stable molecules? We will combine expertise in large molecule spectroscopy and photodissociation dynamics with technology in radical production to provide insight into these fundamental questions. Photodissociation dynamics is firmly embedded in photon science and technology.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0453832
Funder
Australian Research Council
Funding Amount
$550,910.00
Summary
New directions in biomolecular mass spectrometry. The combined UoW/ANU mass spectrometry facility supports a range of research projects in high priority areas including proteomics, mechanisms of aging, anticancer drugs and pathogenicity. The facility has several key deficiencies: 1) the ability to study very high molecular weight biomolecular complexes, 2) the ability to study ion-molecule interactions that have implications in mechanisms of chemistry in nature, and 3) researchers at ANU lack es ....New directions in biomolecular mass spectrometry. The combined UoW/ANU mass spectrometry facility supports a range of research projects in high priority areas including proteomics, mechanisms of aging, anticancer drugs and pathogenicity. The facility has several key deficiencies: 1) the ability to study very high molecular weight biomolecular complexes, 2) the ability to study ion-molecule interactions that have implications in mechanisms of chemistry in nature, and 3) researchers at ANU lack essential walk-up access to high sensitivity protein sequence analysis (MS/MS). The placement of resources that address these deficiencies in one geographical region and collaboration between these institutions will produce a research interaction unique in Australia.Read moreRead less
Atmospheric Free-Radicals: Exploring the Role of Nitrate Radicals in the Oxidative Damage of Bio-Surfaces. This project falls within the National Research Priority 2 (Promoting and Maintaining Good Health) as identified by the ARC, specifically Priority Goal 2 (Ageing well, ageing productively) and Priority Goal 3 (Preventive healthcare). The study will lead to a better understanding of environmental factors influencing health and welfare of Australians every age and will provide unique opport ....Atmospheric Free-Radicals: Exploring the Role of Nitrate Radicals in the Oxidative Damage of Bio-Surfaces. This project falls within the National Research Priority 2 (Promoting and Maintaining Good Health) as identified by the ARC, specifically Priority Goal 2 (Ageing well, ageing productively) and Priority Goal 3 (Preventive healthcare). The study will lead to a better understanding of environmental factors influencing health and welfare of Australians every age and will provide unique opportunities for students to be trained in cutting-edge basic research. Knowledge and fundamental understanding of the damage of bio-surfaces caused by atmospheric free-radical oxidants and their potential role in ageing processes will help to develop novel medical strategies, which substantially contribute to the quality of Australian sciences.Read moreRead less
Why is ColorbondR steel greener on the other side of the fence? Designing additives to retard weathering of surface coatings. COLORBONDR steel, the flagship pre-painted steel product of BlueScope Steel Limited, has become an iconic part of both suburban and outback landscapes whether installed as roofing, walling or water conservation accessories (tanks, down-pipes etc). This proposal aims to provide a detailed understanding of molecular level changes in COLORBONDR steel surface coatings brought ....Why is ColorbondR steel greener on the other side of the fence? Designing additives to retard weathering of surface coatings. COLORBONDR steel, the flagship pre-painted steel product of BlueScope Steel Limited, has become an iconic part of both suburban and outback landscapes whether installed as roofing, walling or water conservation accessories (tanks, down-pipes etc). This proposal aims to provide a detailed understanding of molecular level changes in COLORBONDR steel surface coatings brought about by levels of heat and radiation encountered in-service. These insights will lead to further improvements in both lifetime and aesthetic durability of COLORBONDR steel, ensuring continuing economic success of BlueScope in the domestic building market with consequent benefits to manufacturing communities throughout the supply-chain nationwide.Read moreRead less
Graphene - the new frontier electromaterial for rechargeable lithium batteries and supercapacitors. Global warming and climate change have triggered an intensive demand for clean energy sources to replace fossil fuels. Graphene, as an emerging novel material, can serve as a medium for highly efficient energy storage and conversion in electrochemical devices. This project will lead to the development of novel renewable energy storage and conversion technology for transportation and distributed en ....Graphene - the new frontier electromaterial for rechargeable lithium batteries and supercapacitors. Global warming and climate change have triggered an intensive demand for clean energy sources to replace fossil fuels. Graphene, as an emerging novel material, can serve as a medium for highly efficient energy storage and conversion in electrochemical devices. This project will lead to the development of novel renewable energy storage and conversion technology for transportation and distributed energy supplies. The outcomes of this research will increase our national energy security, facilitate achievement of the Federal government's target of 20% renewable energy in 2020, and bring significant economic and environmental benefits for Australia.Read moreRead less
The recovery of Cu from chalcopyrite-pyrite containing concentrates, ores and tailings. Chalcopyrite, a major source of Cu, is often associated in ores with the valueless mineral pyrite. The development of more efficient methods for the retrieval of the Cu is of considerable economic importance to Australian minerals processing companies. We aim to develop methodologies allowing the more efficient :
- separation of chalcopyrite and pyrite;
- leaching of Cu from ores and tailing in a heap leach ....The recovery of Cu from chalcopyrite-pyrite containing concentrates, ores and tailings. Chalcopyrite, a major source of Cu, is often associated in ores with the valueless mineral pyrite. The development of more efficient methods for the retrieval of the Cu is of considerable economic importance to Australian minerals processing companies. We aim to develop methodologies allowing the more efficient :
- separation of chalcopyrite and pyrite;
- leaching of Cu from ores and tailing in a heap leach environment and
- leaching of Cu in a concentrated chalcopyrite-pyrite reactor environment.
These aims will be achieved via an integrated surface-solution speciation approach allowing the manipulation of surface properties.
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