Colorimetric and luminescent bifunctional iridium(III) complexes for the sensitive recognition of cyanide ions

A new colorimetric and fluorescent probe (QI) based on quinoline-indolium was developed for detection of CN À . In an aqueous solution, QI showed high selectivity and strong antiinterruption for CN À . In addition, it was clearly visible to the naked eyes that the color and fluorescence changes induced by CN À exhibited sharp contrast. The research also found that QI could determine CN À in the range of pH 5-10. The spectral signal was linearly proportional to CN À concentration, and the detection limit was calculated to be low as 41.6 nM. The sensing mechanism of QI to CN À was accomplished via the attachment of CN À at the C atom of indolium salt C=N + group through the nucleophilic addition, which was confirmed by 1 H NMR studies. Notably, we could apply the designed probe for the cycle detection of CN À in a wide pH range, for practical purposes for a long duration. Furthermore, the TLC plates of QI were verified to detect CN À in a simple, rapid way in environmental systems.

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A Colorimetric and Fluorescent Probe Based on Quinoline‐Indolium for Detection of CN⁻ in Aqueous Media

Tang

Dan

et al. 2021

ChemistrySelect

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A benzo[e]indole[2,1-b][1,3]benzooxazine derivative as a highly sensitive CN− sensor by means of UV–visible difference spectroscopy

et al. 2021

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Two phosphorescent iridium(III) complexes containing simple l-alanine ligands as efficient sensors for Cu2+ ions

Zhao

Chu

et al. 2023

Inorganica Chimica Acta

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Colorimetric and luminescent bifunctional iridium(III) complexes for the sensitive recognition of cyanide ions

Cited by 4 publications

References 31 publications

A Colorimetric and Fluorescent Probe Based on Quinoline‐Indolium for Detection of CN⁻ in Aqueous Media

A Colorimetric and Fluorescent Probe Based on Quinoline‐Indolium for Detection of CN⁻ in Aqueous Media

A benzo[e]indole[2,1-b][1,3]benzooxazine derivative as a highly sensitive CN− sensor by means of UV–visible difference spectroscopy

Two phosphorescent iridium(III) complexes containing simple l-alanine ligands as efficient sensors for Cu2+ ions

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Colorimetric and luminescent bifunctional iridium(III) complexes for the sensitive recognition of cyanide ions

Cited by 4 publications

References 31 publications

A Colorimetric and Fluorescent Probe Based on Quinoline‐Indolium for Detection of CN− in Aqueous Media

A Colorimetric and Fluorescent Probe Based on Quinoline‐Indolium for Detection of CN− in Aqueous Media

A benzo[e]indole[2,1-b][1,3]benzooxazine derivative as a highly sensitive CN− sensor by means of UV–visible difference spectroscopy

Two phosphorescent iridium(III) complexes containing simple l-alanine ligands as efficient sensors for Cu2+ ions

Contact Info

Product

Resources

About

A Colorimetric and Fluorescent Probe Based on Quinoline‐Indolium for Detection of CN⁻ in Aqueous Media

A Colorimetric and Fluorescent Probe Based on Quinoline‐Indolium for Detection of CN⁻ in Aqueous Media