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
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
New insights into free radical reactivity via gas phase studies of radical anions. Free radicals are known to be critical reactive intermediates in chemical processes ranging from the formation of photochemical smog, through combustion to the onset of age-related diseases. This research increases our understanding of how free radicals react and will thus allow for more accurate prediction, and in some instances greater control, of the outcomes of chemical reactions and their health and environme ....New insights into free radical reactivity via gas phase studies of radical anions. Free radicals are known to be critical reactive intermediates in chemical processes ranging from the formation of photochemical smog, through combustion to the onset of age-related diseases. This research increases our understanding of how free radicals react and will thus allow for more accurate prediction, and in some instances greater control, of the outcomes of chemical reactions and their health and environmental consequences. New instrumental technologies will be developed and young Australian researchers will be trained here, and with collaborators in the USA, in state-of-the-art techniques (particularly in mass spectrometry) that are essential to our emerging technology-based economy.Read moreRead less
A new approach to the generation of long-lived charge-separated states in rigid Donor-Bridge-Acceptor systems. Electron transfer and energy transfer are ubiquitous in nature and they provide the key to the design of energy transducing materials. Considerable effort is being expended into studying light-induced electron transfer which leads to the formation of a charge-separated state or molecular "battery". To be useful, these batteries should have lifetimes at least in the microsecond domain ....A new approach to the generation of long-lived charge-separated states in rigid Donor-Bridge-Acceptor systems. Electron transfer and energy transfer are ubiquitous in nature and they provide the key to the design of energy transducing materials. Considerable effort is being expended into studying light-induced electron transfer which leads to the formation of a charge-separated state or molecular "battery". To be useful, these batteries should have lifetimes at least in the microsecond domain and this is not easily achieved in practice. This project will explore a new, elegant, and promising approach to the efficient generation of very long-lived charge-separated states in rigid systems, which is based on triplet sensitisation.
Read moreRead less
Formation of organic pollutants in fires of treated and contaminated wood. This project quantifies the emission of dioxins and biphenyls in burning of treated and contaminated wood to provide data on whether combustion of such materials should be regulated in Australia and whether an educational campaign needs to be mounted to make public aware of this problem. For example, our preliminary results indicate that, timber treated with copper boron azole, a non-arsenic replacement for CCA preservat ....Formation of organic pollutants in fires of treated and contaminated wood. This project quantifies the emission of dioxins and biphenyls in burning of treated and contaminated wood to provide data on whether combustion of such materials should be regulated in Australia and whether an educational campaign needs to be mounted to make public aware of this problem. For example, our preliminary results indicate that, timber treated with copper boron azole, a non-arsenic replacement for CCA preservative, produces extremely high levels of dioxins, both in flames and in the ash. If the preliminary results are confirmed, this agent must be disallowed as a wood preservative in Australia, as it poses unacceptable risks to the Australian population and environment. Read moreRead less
Free Radicals in Chemistry and Biology: A Computational Quantum Chemistry Investigation. This proposal aims to carry out state-of-the-art chemistry research using computers rather than traditional laboratory techniques. Free radicals, which have widespread importance in the multibillion dollar polymer and health industries, form the centrepiece of the proposal. These are highly reactive substances that are difficult to study by conventional experimental techniques but ideal to study using compu ....Free Radicals in Chemistry and Biology: A Computational Quantum Chemistry Investigation. This proposal aims to carry out state-of-the-art chemistry research using computers rather than traditional laboratory techniques. Free radicals, which have widespread importance in the multibillion dollar polymer and health industries, form the centrepiece of the proposal. These are highly reactive substances that are difficult to study by conventional experimental techniques but ideal to study using computers. The increased understanding of free radicals that will stem from this research may help in dealing with ageing, and afflictions such as hardening of the arteries and vitamin B12 deficiency. It will also result in the training at the highest level of new generations of chemists in this exciting field of "chemistry with computers".Read moreRead less