期刊
TETRAHEDRON
卷 69, 期 8, 页码 1965-1969出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2012.12.075
关键词
Sensors; Mercury(II); Pyrene; Imaging agents
资金
- National Science Council (ROC)
- National Chiao Tung University
Three new pyrene derivatives (MS1, MS2, and MS3) containing two triazole units exhibited fluorescence quenching in the presence of Hg2+ ions. Other metal ions Ag+, Ca2+, Cd2+,Co2+, Cu2+, Fe2+, Fe3+, K+, Mg2+, Mn2+, Na+, Ni2+, Pb2+, Rb+, and Zn2+ produced only minor changes in the fluorescence of MS1, MS2, and MS3. The binding ratio of the chemosensor-Hg2+ complexes was found to be 1:1 according to Job plot experiments. The association constants (K-a) of chemosensor-Hg2+ complexes were found to be 1.68x10(3) M-1 (MS1), 1.57x10(3) M-1 (MS2), and 1.52x10(3) M-1 (MS3), respectively. Moreover, fluorescence microscopy experiments showed that MS1 could be used as a fluorescent probe for detecting Hg2+ in living cells. (C) 2013 Elsevier Ltd. All rights reserved.
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