Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 146, Issue 1, Pages 373-380Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2010.02.031
Keywords
Logic gate; Azobenzene-containing; Chemical inputs; Metal cations; Fluorescence
Funding
- Ministry of Education. Science and Technology, Korea (MEST) [2009-0078791]
- Ministry of Knowledge Economy, Korea
- Korea-China Joint Research Center Program of the NRF
- Brain Korea 21 Project
- MEST
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Photophysical properties of new azobenzene-containing compounds (E)-2-((2-(undec-10-enoyloxy)phenyl)diazenyl)phenol (1) and 2-((E)-(2((E)-3-bromoallyloxy)phenyl)diazenyl)phenol (2) were studied at various pH levels. The two substituents, 1 (pK(a) 9.38) and 2 (pK(a) 11.38) exhibited large differences in their sensing characteristics toward metal cations. 1 can act as a fluorescent INHIBIT logic gate driven by pH (HO-) and Zn2+ ions, while 2 can be made to operate OR logic gate by appropriate interaction with HO- and Cu2+ as chemical inputs. (C) 2010 Elsevier B.V. All rights reserved.
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