期刊
TETRAHEDRON
卷 69, 期 46, 页码 9600-9608出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2013.09.038
关键词
Al3+-selective; Fluorescent chemosensor; Regioisomeric naphthol-thiazole; Turn-on; Al3+-promoted hydrolysis
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF)
- Ministry of Science, ICT and Future Planning [2013006777]
- Kyungpook National University Research Fund
Two new reactive and highly selective turn-on fluorescent chemosensors based on the position of ring annulation of the naphthalene thiazole moiety for aluminum ions in ethanol, were synthesized and investigated. It was found that sensors 2 and 4 exhibited a remarkable enhancement of emission upon complexation with Al3+. A TD-B3LYP/6-31G(d,p) calculation was performed to characterize the nature of the fluorescence behavior of sensors 2 and 4 upon Al3+ complexation. The mechanism of fluorescence was based on the cation promoted hydrolysis of ester and subsequent complexation. The combination of experimental and computational analyses provides a more complete understanding of the molecular level origin of these types of unique photophysical properties. (c) 2013 Elsevier Ltd. All rights reserved.
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