Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 146, Issue 1, Pages 160-164Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2010.02.042
Keywords
Anion sensors; Fluoride; Dipyrrolemethane; Colorimetric sensor
Funding
- Chonnam National University [2009]
- National Research Foundation of Korea [과06B1512] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Colorimetric fluoride ion sensors were developed using dipyrrolemethanes 1-4 synthesized from the reaction of aldehydes and pyrrole. The sensors showed a color change upon addition of fluoride ion with a substantial bathochromic shift. No significant color change was observed upon addition of any other anions. The significant changes of absorption bands and color show that chemosensor is selective toward fluoride ion over other anions such as Br-, Cl-, NO3-, HSO4-, SO42-, AcO- and H2PO4-. The binding constants of sensors with fluoride ion were obtained in the order of similar to 10(2) which is enough to detect the fluoride ion. (C) 2010 Elsevier B.V. All rights reserved.
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