Journal
TETRAHEDRON
Volume 71, Issue 45, Pages 8521-8527Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2015.09.038
Keywords
Thiacalix[4]arene; Triazole; Pyrenyl; Copper; Chemosensor
Categories
Funding
- OTEC at Saga University
- International Cooperation Projects of Guizhou Province [20137005]
- EPSRC
- Engineering and Physical Sciences Research Council [EP/L012804/1] Funding Source: researchfish
- EPSRC [EP/L012804/1] Funding Source: UKRI
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A new thiacalix[4]arene based fluorescent chemosensor L bearing two pyrenyl groups in a 1,3-alternate conformation has been synthesized, and its metal ion-binding and fluorescence-sensing properties were investigated in ethanol. The designed chemosensor L exhibited high selectivity toward Cu2+ ions versus other tested metal ions with a detection limit of up to 1.44x10(-7) M. The chemosensor L was capable of acting as an efficient ratiometric fluorescent chemosensor at low ion concentration or as a fluorescence quenching type chemosensor due to the PET and heavy atom effects operating in high ionic strength solution. Further studies revealed that chemosensor L acted as a reversible sensor in the presence of Cu2+ and ethylenediamine. (C) 2015 Elsevier Ltd. All rights reserved.
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