Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 145, Issue 2, Pages 826-831Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2010.01.060
Keywords
Colorimetric; Fluorescence; Zn; Cu; Sensors; Logic gates
Funding
- National Natural Science Foundation of China [20874038]
- National Basic Research Program of China [2007CB936402]
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The 2,2'-bis(3,5-dichloro-2-hydroxybenzylideneamino)-1,1'-binaphthyl salen-type Schiff base (BCHB) has been synthesized and characterized. Exhibiting absorption and fluorescence changes in the presence of Cu2+ and Zn2+ in tetrahydrofuran (THF) solution, BCHB could be used as a colorimetric 'naked eye' and fluorescent chemosensor for the detection of Cu2+ and Zn2+ bi-functionally. Furthermore, this organic ligand can selectively recognize Cu2+ and Zn2+ in the presence of other metal ions (such as Na+, Ag+, Mn2+, Co2+, Ni2+, Fe3+, Cd2+, Hg2+, Pb2+, La3+, and Nd3+), respectively. On the other hand. BCHB presents a tunable system integrated with one OR logic gate as well as one INHIBIT logic gate with Zn2+ and Cu2+ as chemical inputs by monitoring fluorescence and absorbance as output signals. Also, one IMPLICATION gate operating in fluorescence mode with Cu2+ and EDTA as chemical inputs, based on their different binding capabilities, is present in this system. (C) 2010 Elsevier B.V. All rights reserved.
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