A new bis-pyrene derivative as a selective colorimetric and fluorescent chemosensor for cyanide and fluoride and anion-activated CO2 sensing

Minji Lee, Jong Hun Moon, K. M.K. Swamy, Youngsuk Jeong, Gyoungmi Kim, Jiyoung Choi, Jin Yong Lee, Juyoung Yoon

Research output: Contribution to journalArticlepeer-review

64 Scopus citations

Abstract

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 CH 3CN-DMSO (99:1, v/v), which was accompanied by unique colorimetric changes. Likewise, in CH3CN-DMSO-EtOH (98:1:1, v/v) or CH 3CN-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.

Original languageEnglish
Pages (from-to)369-376
Number of pages8
JournalSensors and Actuators, B: Chemical
Volume199
DOIs
StatePublished - Aug 2014

Keywords

  • Anion recognition
  • Colorimetric sensor
  • Cyanide selective chemosensor
  • Fluorescence sensor

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