Structured weak absorption spectrum of p-terphenyl microcrystals dispersed in methylcyclohexane glass matrix at 77K |
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| Institution: | 1. Physical and Mental Health Stream, Queensland Centre for Mental Health Research, Wacol, QLD 4076, Australia;2. Queensland Brain Institute, The University of Queensland, St Lucia, QLD 4072, Australia;3. Metro South Addiction and Mental Health Services, Woolloongabba, QLD 4102, Australia;4. School of Medicine, Griffith University, Nathan, QLD 4111, Australia;5. Institute for Urban Indigenous Health, Windsor, QLD 4030, Australia;6. School of Medicine, The University of Queensland, Herston, QLD 4102, Australia;7. Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, London, United Kingdom;8. NORMENT, Institute of Clinical Medicine, University of Oslo, Oslo, Norway;9. Geriatric Unit, Department of Internal Medicine and Geriatrics, University of Palermo, 90100 Palermo, Italy;10. KU Leuven Department of Rehabilitation Sciences, Leuven, Belgium;11. KU Leuven, University Psychiatric Center KU Leuven, Leuven-Kortenberg, Belgium;12. Department of Neuroscience, University of Padova, Padova, Italy;13. Padua Neuroscience Center, University of Padova, Padova, Italy;14. Department of Psychiatry, Royal College of Surgeons in Ireland, Dublin, Ireland;15. Department of Psychiatry, Mater Misericordiae University Hospital, Dublin, Ireland;p. South London and Maudsley NHS Foundation Trust, Denmark Hill, London SE5 8AZ, United Kingdom;q. Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King''s College London, De Crespigny Park, London, Box SE5 8AF, United Kingdom;r. Division of Mental Health and Addiction, Oslo University Hospital, 0407 Oslo, Norway |
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| Abstract: | P-terphenyl microcrystals dispersed in a methylcyclohexane glass matrix at 77 K showed a sharp structured weak absorption system at lower energy than the well known strong conjugation band. We assign it to the short-axis polarized transition, 1B3u←1Ag. It is concluded that the lowest excited singlet state is a long-lived state, 1B3u, in a planar conformation, whereas it is a short-lived state, 1Au, in a twisted conformation. |
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