SENSORS FOR AROMATIC MOLECULES BASED ON METAL ION ACTIVATED MOLECULAR RECEPTORS. This project aims to develop highly sensitive chemical sensors for aromatic compounds which will quantify their concentration, in situ, without elaborate sample preparation or instrumentation. The sensors will employ advanced supramolecular chemistry in which the aromatic molecule becomes trapped within a binding cavity in the three dimensional structure of a larger receptor molecule. Coincident with the entrapmen ....SENSORS FOR AROMATIC MOLECULES BASED ON METAL ION ACTIVATED MOLECULAR RECEPTORS. This project aims to develop highly sensitive chemical sensors for aromatic compounds which will quantify their concentration, in situ, without elaborate sample preparation or instrumentation. The sensors will employ advanced supramolecular chemistry in which the aromatic molecule becomes trapped within a binding cavity in the three dimensional structure of a larger receptor molecule. Coincident with the entrapment a change in the fluorescence level of the receptor occurs which signals the presence of the aromatic compound and its concentration. This research will stimulate economic and social benefits through the development of new environmental and medical sensing techniques and analytical diagnostics.Read moreRead less
Exploring Aspects of Supramolecular Chemistry as a Paradigm for Advanced Functional Materials. This research proposal aims to provide an intellectual grounding in the use of molecular recognition for the assembly of complex arrays for new materials research. The development of molecular systems and supramolecular arrays that are capable of solar energy conversion (e.g. photovoltaics and artificial photosynthesis) or that have potential applications in catalysis will provide advances in the deve ....Exploring Aspects of Supramolecular Chemistry as a Paradigm for Advanced Functional Materials. This research proposal aims to provide an intellectual grounding in the use of molecular recognition for the assembly of complex arrays for new materials research. The development of molecular systems and supramolecular arrays that are capable of solar energy conversion (e.g. photovoltaics and artificial photosynthesis) or that have potential applications in catalysis will provide advances in the development of these industries within Australia. Such developments may also lead to breakthroughs in areas such as optoelectronics and cleaner energy production. Read moreRead less
Peptide Nucleic Acid Based Sensors and Devices - An Investigation into PNA Versatility for Emerging Gene Technologies. Peptide nucleic acids (PNAs) are analogues of DNA that may have important implications as therapeutic agents for the cure of diseases based on genetic defects. The attributes of PNAs that make them potentially viable as a drug are also well suited to their development as sensors and molecular devices. In this proposal, we wish to develop a series of PNAs containing photoactive ....Peptide Nucleic Acid Based Sensors and Devices - An Investigation into PNA Versatility for Emerging Gene Technologies. Peptide nucleic acids (PNAs) are analogues of DNA that may have important implications as therapeutic agents for the cure of diseases based on genetic defects. The attributes of PNAs that make them potentially viable as a drug are also well suited to their development as sensors and molecular devices. In this proposal, we wish to develop a series of PNAs containing photoactive elements (a) as alternatives to commercially-available fluorophores, (b) for the early detection of neurodegenerative diseases and (c) to contribute to one of Science's most debated issues i.e. "does DNA mediate electron transport?"Read moreRead less
Dendrimers: multidimensional sensors. The threat of terrorism is presented to us on a daily basis. Although there is often talk of dirty bombs, and biological and nuclear terrorism, the most easily sourced weapon of the terrorist is still the conventional explosive. As such the ability to detect trace amounts of compounds such as TNT or Semtex is required. This means that there is a real need for a portable detection system with the ability to reliably sense a specific explosive, selectively at ....Dendrimers: multidimensional sensors. The threat of terrorism is presented to us on a daily basis. Although there is often talk of dirty bombs, and biological and nuclear terrorism, the most easily sourced weapon of the terrorist is still the conventional explosive. As such the ability to detect trace amounts of compounds such as TNT or Semtex is required. This means that there is a real need for a portable detection system with the ability to reliably sense a specific explosive, selectively at low concentrations. This project concerns the development of new sensors that have potential to increase the nation's security.Read moreRead less
In-field sensors for the detection of illicit drugs. Presumptive field test kits for illicit drugs analysis are typically based on chemical spot tests that produce a coloured product. While relatively easy to apply, such test kits (containing wet chemicals) produce inconclusive colour changes lacking sensitivity, and selectivity requiring a subjective assessment by the examiner. Despite these limitations, these test kits are in widespread use and are routinely used. This study aims to develop s ....In-field sensors for the detection of illicit drugs. Presumptive field test kits for illicit drugs analysis are typically based on chemical spot tests that produce a coloured product. While relatively easy to apply, such test kits (containing wet chemicals) produce inconclusive colour changes lacking sensitivity, and selectivity requiring a subjective assessment by the examiner. Despite these limitations, these test kits are in widespread use and are routinely used. This study aims to develop specific in-field sensors for the detection and identification of illicit drugs. This would significantly enhance the ability of Forensic Services staff to confirm the identity of seized material. Increased specificity would provide valuable early advice to investigators regarding the nature of a seizure and would reduce the likelihood of false positive results. Increased sensitivity would permit the analysis of trace amounts of material from individuals or locations related to an illicit drug consignment.Read moreRead less
Development of an interferometric nanoscale silicon biosensor. Voelcker et al. have recently demonstrated the rapid degradation of porous silicon by certain supramolecular transition metal complexes known as functional mimics of metalloproteins. The catalyzed degradation forms the basis of a new sensor principle where the porous layer serves as matrix, transducer and signal amplification stage. This project uses porous silicon degradation to develop a biosensor platform capable of detecting a ra ....Development of an interferometric nanoscale silicon biosensor. Voelcker et al. have recently demonstrated the rapid degradation of porous silicon by certain supramolecular transition metal complexes known as functional mimics of metalloproteins. The catalyzed degradation forms the basis of a new sensor principle where the porous layer serves as matrix, transducer and signal amplification stage. This project uses porous silicon degradation to develop a biosensor platform capable of detecting a range of analytes with high sensitivity. The project includes detection of an water-borne toxin, a plant virus and a cancer antigen as demonstrators of its wide applicability. Multiplexing of the biosensor to demonstrate its potential as high-throughput chip sensors is also included.Read moreRead less
Investigations into the Versatility of Peptide Nucleic Acid Conjugates. Neurodegeneration and cancer are two of the greatest frontiers in modern medicine. They impose significant medical, financial and social burdens on sufferers, carers and the wider community. Novel technologies with the ability to help diagnosis, enlighten researchers to the biological principles governing the disease and that can make a contribution to prevention, quality of life issues and survival of sufferers are of utmos ....Investigations into the Versatility of Peptide Nucleic Acid Conjugates. Neurodegeneration and cancer are two of the greatest frontiers in modern medicine. They impose significant medical, financial and social burdens on sufferers, carers and the wider community. Novel technologies with the ability to help diagnosis, enlighten researchers to the biological principles governing the disease and that can make a contribution to prevention, quality of life issues and survival of sufferers are of utmost importance. This project aims to make a significant contribution to these areas using antisense technologies against some previously studied targets.Read moreRead less