Minerva Elements Records
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ItemNo Preview AvailableObjects of fame(The Grainger Museum, University of Melbourne and The Victorian Arts Centre Trust, 2018)Melbourne produced two international stars of classical music – Dame Nellie Melba and Percy Grainger – in the decades surrounding Federation. Adopting a name in honour of her home town, Nellie Melba made her professional debut in 1887 and became hailed as the greatest opera singer of her time. Percy Grainger was a child prodigy who forged a career of pianistic brilliance and musical innovation as the new century unfolded. Each conquered the world’s great stages, enjoyed royal approbation and public fascination. The musical talents of Melba and Grainger, who had both family and professional connections, were matched only by the fame they engendered. Stampeding their way into popular consciousness as early media-assisted celebrities, they created rich intellectual and material legacies. Objects of Fame showcased these two extraordinary Australians, drawing on objects from Arts Centre Melbourne’s Australian Performing Arts Collection (APAC), and the Grainger Museum. With 221 collection objects on display. this exhibition also offered opportunities to consider fame in the context of today’s technology-focused culture that allows performers to become ‘famous’ in ways that Grainger and Melba could never have conceived.
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ItemMolecularly isolated perylene diimides enable both strong exciton-photon coupling and high photoluminescence quantum yield(Royal Society of Chemistry, 2019-03-14)Strong coupling in organic media holds the promise of efficient room temperature polariton lasing with solution-processed materials. Currently, however, only five pure-organic materials have been shown to demonstrate polariton lasing. A major challenge is to achieve high exciton–photon coupling while maintaining high photoluminescence quantum yield. Here, we utilize a series of diimide perylene materials that possess sterically hindered substituents, dispersed within a polymer matrix. The rigid structures prevent aggregation and allow high photoluminescence quantum yield (PLQY) at large dye loadings. We demonstrate that these systems can exhibit substantial Rabi splittings at dye loadings that yield film PLQYs of up to 85%, making these perylene derivatives promising materials for polariton lasers.
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ItemHighly Efficient Luminescent Solar Concentrators by Selective Alignment of Donor-Emitter Fluorophores(AMER CHEMICAL SOC, 2019-04-23)Vertically aligning fluorophores to the surface of a waveguide is known to be an effective approach to improve the optical quantum efficiency (OQE) of luminescent solar concentrators (LSCs). While the chromophore alignment assists waveguiding of the emitted photons to the LSC edges, it also significantly reduces the light-harvesting properties of the LSC. We report here a fluorophore pair consisting of a sphere-shaped energy donor and a rod-shaped emitter that was incorporated in LSCs to provide selective fluorophore alignment to address the reduced incident-light absorption issue. A liquid-crystal polymer matrix was used to perpendicularly align the rod-shaped acceptors to a favorable orientation for light guiding, while the sphere-shaped donor was randomly oriented to maintain its light-absorbing properties. The OQE of LSC devices with this selectively aligned donor-acceptor fluorophore system is 78% without significant loss of light-harvesting capability.
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ItemTetrabenzo[5.7]fulvalene: a forgotten aggregation induced-emission luminogen(ROYAL SOC CHEMISTRY, 2019-10-04)Tetrabenzo[5.7]fulvalene, one of the first recognized stable members of mixed fulvalenes, has attracted widespread interest for its remarkable structure. However, little has been known about its photoactivity, most likely owing to its very weak luminescence in the solution state. Here we show for the first time that this compound exhibits aggregation-induced emission (AIE) properties. Its photoluminescence and X-ray crystal structure reveal an interesting mechanism of the AIE phenomenon.
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ItemIntramolecular Versus Intermolecular Triplet Fusion in Multichromophoric Photochemical Upconversion(AMER CHEMICAL SOC, 2019-08-22)Photon upconversion is a process that creates high-energy photons under low photon energy excitation. The effect of molecular geometry on the triplet fusion upconversion process has been investigated in this work through the design and synthesis of four new 9,10-diphenylanthracene (DPA) derivatives by employing platinum octaethylporphyrin as the triplet sensitizer. These new emitter molecules containing multiple DPA subunits linked together via a central benzene core exhibit high fluorescence quantum yields. Interestingly, large differences in the triplet fusion upconversion performance were observed between the derivatives with the meta-substituted dimer showing the closest performance to the DPA reference. The differences are discussed in terms of the statistical probability for obtaining a high-energy singlet excited state from triplet fusion, f, for both inter- and intramolecular processes and the effect of magnetic field on the upconversion efficiency. These results demonstrate the challenges to be overcome in improving triplet fusion upconversion efficiency based on multichromophoric emitter systems.
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ItemContinuous Flow Synthesis of Conjugated Polymers and Carbon Materials(WILEY-V C H VERLAG GMBH, 2017)The basic equipment associated with the synthesis of chemicals in the laboratory has remained essentially unchanged since the establishment of chemistry as a scientific discipline. Most techniques and apparatus are optimized for batch-by-batch processes. These traditional batch techniques have the benefit of familiar and time-tested methodology and low up-front cost, and therefore the shift to more modern apparatus requires some additional motivating factors. Continuous flow processing is a technique which involves a nontrivial initial investment of both time and finances, but which offers significant benefits to synthetic chemists. Continuous flow processing has been increasing in prominence in the research laboratory setting in the last decade, and a number of research groups now specialize in the development of methods for flow processing. This progress is buoyed by the commercial availability of the associated equipment, which can now be purchased from several vendors.
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ItemAggregation-induced emitters in light harvesting(Springer, 2019)Light harvesting is an integral part of energy conversion of sunlight into chemicals and electricity. In this chapter, the application of materials with aggregation-induced emission properties in artificial photosynthesis and photon refining technologies is summarized and discussed. In artificial photosynthesis, aggregation-induced emitters enable efficient energy transfer in self-assembled arrays. Thin film luminescent solar concentrators have also been made possible by aggregation-induced emitters as high concentrations of these chromophores can be used in such devices. Aggregates are also important in photon upconversion where proximity of chromophores enables efficient triplet energy transfer and triplet-triplet annihilation processes.
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ItemDegradation profiles of silk textiles in diverse environments: Synchrotron based infrared micro-spectroscopy analysis(Springer, 2017)In this paper, synchrotron based infrared micro-spectroscopy was utilized to describe the degradation profile of fibroin contained in silk textiles (Bombyx mori). The spatial distributions of deterioration effects in silk samples artificially aged at an assortment of conditions (thermal, hydrolytic and ultraviolet) were distinctly visualised and in accordance with the findings from conventional infrared spectroscopy in references. Further this method was applied on a historic sample from a private collection in Melbourne, and presented consistent results. This established synchrotron IR chemical mapping method could enable museum professionals to better understand the preservation state of historic silk and make informed decisions for conservation.
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ItemRetablos & Santos: ‘Altaring’ The Life Of Philippine Heritage Through Future Generations(Aula Barat and Faculty of Art and Design, Bandung Institute of Technology, 2018)This paper aims to examine the role of living cultural heritage to materials conservation and restoration of retablos and santos at the National Museum of Fine Arts in the Philippines (NMP) and the Parish Church of La Purísima Concepción in Guiuan. In researching the restoration practices of cultural communities that retablos and santos hold significance to, this paper is framed by textual analysis, and interviews with heritage, ecclesiastic and conservation professionals. With ever-increasing cultural homogenisation, the importance of conservators working towards preventing cultural identities from being absorbed by universal discourses and popular cultures are argued in this paper. In reflecting upon knowledge systems and communication platforms that support conservation, the exchange of knowledge, its usability and wide audience possibilities as necessary pathways to preserving memory for living and future generations will be focused upon.
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ItemBetween Art and Heritage Conservation: An Examination of the Discipine, Profession and Professional Practice in Indonesia(Aula Barat and Faculty of Art and Design, Bandung Institute of Technology, 2018)Indonesia is witnessing a growth in the art market in addition to the increased protection of its national cultural heritage. This raises questions about the current position of art and heritage conservation as a profession, discipline, and professional practice in Indonesia to support the preservation of its ‘old culture (s)’. In addressing the themes of the conference, this paper examines the definition of conservation in Indonesia and explores the opportunities for the renewal of ‘old cultures’ for an Indonesian practice of conservation to emerge as distinct from other parts of the world. we argue that conservation should meet the ‘place-based’dimensions of tradition, living cultures, climate, materiality, and natural disasters. The approach used includes a literature review, archival research, policy analysis, and semi-structured interviews. The practices of neighbouring countries are also explored for comparative purposes. The results show that existing policies are in place to support the conservation of cultural materials in Indonesia; however, these do not address the development or sustainability of the profession and discipline for a shared thought style to emerge. The research also indicates that there is a distinct line of separation between the conservation of cultural heritage compared to the fine arts.