Fluorescence quenching of carbazole and indole by ethylenetrithiocarbonate |
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| Institution: | 1. Department of Emergency, First Affiliated Hospital, Henan University of Science and Technology, Luoyang 471000, China;2. Department of Neurosurgery, China-Japan Union Hospital of Jilin University, Changchun 130033, China;3. Department of Neurosurgery, The First People''s Hospital of Yancheng( The Fourth Affiliated Hospital of Nantong University), Yancheng 224006, China;1. LIEC – Interdisciplinary Laboratory of Electrochemistry and Ceramics, Department of Chemistry, UFSCar-Federal University of São Carlos, Rod. Washington Luis km 235, CP 676, 13565-9905 São Carlos, SP, Brazil;2. Department of Chemistry, UFSCar – Federal University of São Carlos, Rod. Washington Luis km 235, CP 676, São Carlos, SP 13565-9905, Brazil;1. Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, ROC;2. Department of Fragrance and Cosmetic Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, ROC;3. Department of Chemistry, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan;4. Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan, ROC;5. Department of Chemistry, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan, ROC |
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| Abstract: | The fluorescence of quenching of carbazoles and indoles by ethylenetrithiocarbonate has been studied. Both steady-state and transient fluorescence experiments were carried out in order to determine rate constants in the case of carbazoles. The results obtained support the charge-transfer mechanism. Ground-state complex formation is assumed to explain the higher rate constants for indole and its derivatives, which appear as positive curvatures in Stem-Volmer plots. |
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