Fluorescence of saturated hydrocarbons. II. The effect of alkyl substituents |
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| Affiliation: | 1. Institute for Physics of Microstructures of the Russian Academy of Sciences (IPM RAS), GSP-105, Nizhny Novgorod 603950, Russian Federation;2. Lobachevsky State University of Nizhny Novgorod (UNN), 23 Gagarin Ave., Nizhny Novgorod 603950, Russian Federation;3. Ivanovo State University of Chemistry and Technology (ISUCT), 7 Sheremetievskiy Ave., Ivanovo 153000, Russian Federation;1. Ivanovo State University of Chemistry and Technology, Ivanovo, 153000, Russian Federation;2. MIREA – Russian Technological University, Moscow, 119571, Russian Federation;1. Ivanovo State University of Chemistry and Technology, Research Institute of Chemistry of Macroheterocyclic Compounds, Ivanovo 153000, Russia;2. Moscow Lomonosov State University of Fine Chemical Technologies, Moscow 119571, Russia;3. Ivanovo State University, Ivanovo 153025, Russia;1. College of Science, Huazhong Agricultural University, Wuhan 430070, Hubei, China;2. College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, Hubei, China;3. Key Laboratory of Advanced Energy Materials Chemistry of Ministry of Education, School of Material Science and Engineering, Nankai University, Tianjin 300071, China;1. Technische Thermodynamik, Universität Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany;2. MAPEX Center for Materials and Processes, Universität Bremen, 28359 Bremen, Germany;3. School of Engineering, University of Aberdeen, Fraser Noble Building, Aberdeen AB24 3UE, UK;4. Erlangen Graduate School in Advanced Optical Technologies (SAOT), University of Erlangen-Nuremberg, Erlangen, Germany |
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| Abstract: | Fluorescence spectra and quantum yields have been determined for a variety of normal and cyclic alkanes and for some of their alkyl derivatives. In the case of normal alkanes, the quantum yield increases almost linearly with number of carbon atoms from pentane to heptadecane, whereas the emission spectrum remains unchanged. The addition ofa methyl group strongly reduces the quantum yield and shifts the spectrum to the red. For cycloalkanes, a relatively intense emission is observed only for cyclohexane and its alkyl derivatives, whereas cyclopentane, cycloeptane, cyclooctane, and cyclodecane exhibit no fluorescence. |
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