The ground state tautomer in the excited state relaxation process of 3-hydroxyflavone at room temperature |
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| Affiliation: | 1. Chemistry Department, Faculty of Science, Damietta University, Damietta 34517, Egypt;2. Chemistry Department, Faculty of Science, Taif University, Saudi Arabia;3. Physics Department, Faculty of Science, Damietta University, Damietta 34517, Egypt;1. Department of Chemistry, Gauhati University, Guwahati 781014, Assam, India;2. Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India |
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| Abstract: | Very recently, the ground state reverse proton transfer in 3-hydroxyflavone (3-HF) has been reported to take place within 30 ps by picosecond transient absorption spectroscopy by Aartsma and co-workers. Here we present evidence of intervention of a long-lived ground state tautomer involved in the excited state relaxation process of 3-HF by transient absorption and two-step laser excitation fluorescence spectroscopy. |
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