Raman spectra and structure of biphenyl isoatomers (the S0, S1, T1 states and the cation and anion radicals) |
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| Institution: | 1. Coronary Care Unit and Laboratory of Clinical and Experimental Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy;2. Department of Molecular Medicine, University of Pavia, Pavia, Italy;3. Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy;4. Division of Cardiology, University of Torino, Città della Salute e della Scienza Hospital, Turin, Italy;1. Faculty of Physics, Shahid Bahonar University of Kerman, Kerman, Iran;2. Supermaterials Research Laboratory (SRL), Department of Physics, University of Tehran, North Kargar Ave., P.O. Box 14395-547, Tehran, Iran |
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| Abstract: | The Raman and transient resonance Raman spectra of biphenyl (BP) and its perdeuterated analogue (BP-d10) in three different electronic states (S0, S1 and T1) and in two different ionized states (cation and anion) have been recorded in solution. The S0 Raman spectra have also been measured for the crystalline state. The obtained set of spectra are analysed on the basis of the established vibrational assignments for the ground state of the planar (crystal) and the non-planar (solution) structures. The analysis suggests that BP in solution exists as a twisted structure in the S1 state, but that it takes planar or nearly planar structures in the T1, the cationic and the anionic states. |
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