A new bis-pyrene derivative as a selective colorimetric and fluorescent chemosensor for cyanide and fluoride and anion-activated CO2 sensing
- 주제(키워드) Anion recognition , Cyanide selective chemosensor , CO2 sensing , Colorimetric sensor , Fluorescence sensor
- 등재 SCIE, SCOPUS
- 발행기관 ELSEVIER SCIENCE SA
- 발행년도 2014
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000091622
- 본문언어 영어
- Published As http://dx.doi.org/10.1016/j.snb.2014.04.005
초록/요약
In the present study, we report the solvent controlled selectivity of cyanide. A newly synthesized bis-pyrene derivative 1 exhibited large "off-on" fluorescence enhancement with fluoride and cyanide in CH3CN-DMSO (99:1, v/v), which was accompanied by unique colorimetric changes. Likewise, in CH3CN-DMSO-EtOH (98:1:1, v/v) or CH3CN-DMSO-H2O (94:1:5, v/v), selective fluorescence enhancement with cyanide was observed among the various anions, which was attributed to a favourable interaction between the fluoride ion with ethanol or water. The binding modes, UV absorption and fluorescence changes of 1 upon CN- binding are also explained by DFT calculations. Probe 1 was successfully applied for imaging cyanide in the HeLa cells. Finally, anion-activated CO2 sensing via colour and fluorescence changes is demonstrated using chemosensor 1. (C) 2014 Published by Elsevier B.V.
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