Visual and reversible detection of cyanide ions in protic solvents by a novel colorimetric receptor

Nie, Hong-mei; Gong, Cheng-Bin; Tang, Qian; Ma, Xuebing; Chow, Cheuk Fai Stephen

doi:10.1016/j.dyepig.2014.02.020

Cited by 48 publications

(19 citation statements)

References 42 publications

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“…As shown in the Job curve (Fig. 39,40 Considering the analytical application of 2-HPEAPB in environmental samples, the inuence of pH and temperature on CN À detection was investigated. 46 The limit of detection (LOD) of 2-HPEAPB for CN À by UV-Vis was measured to be 4.5 Â 10 À6 mol L À1 in acetonitrilewater (95 : 5, v/v) according to DL ¼ 3s/K, 47 and a LOD of 8.0 Â 10 À6 mol L À1 was obtained by the naked eye (Fig.…”

Section: Mechanism Study Of Recognition and Quantitative Analysismentioning

confidence: 99%

Colorimetric test paper for cyanide ion determination in real-time

Jin

Chen

et al. 2015

Anal. Methods

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A colorimetric cyanide ion (CN À ) sensor 4-[(1E)-2-(2-hydroxyphenyl)ethenyl]-1-allylpyridinium bromide (2-HPEAPB) was synthesized via condensation and N-alkylation reactions using 4-methylpyridine and salicylaldehyde as the starting materials. 2-HPEAPB displayed good selectivity, fast response, and high sensitivity toward CN À over other competing anions in acetonitrile-water (95 : 5, v/v) with a limit of detection of 8.0 Â 10 À6 mol L À1 by the naked eye. The sensing mechanism and the influence of pH and temperature on sensing properties were investigated. Colorimetric test paper for CN À was prepared by absorption of 2-HPEAPB to a chromatography paper, which could be used to detect CN À directly and quickly. Analytical application of measuring CN À concentration in an electroplating wastewater in realtime was conducted successfully.

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Section: Mechanism Study Of Recognition and Quantitative Analysismentioning

confidence: 99%

Colorimetric test paper for cyanide ion determination in real-time

Jin

Chen

et al. 2015

Anal. Methods

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“…The sensing mechanism was probably related to the strong interaction of CN À with the hydrogen of eOH through hydrogen bonding and subsequent deprotonation as observed from the disappearance of the eOH signal in the 1 H NMR spectra of HPEAPB upon the addition of CN À (Fig. 4) [34,47], which resulted in an intramolecular charge transfer from O to HCN (indicated by change in fluorescence) [48,49].…”

Section: Selectivity Of Cph1e1mentioning

confidence: 94%

“…The crosslinked polymer microsphere-based colorimetric and fluorescent CN À probe can be reversed after detection of CN À through Cu 2þ displacement [47,52]. Taking CpH1E1 for CN À via UVevis for example (Fig.…”

Section: Reversibility Of Cph1e1mentioning

confidence: 99%

A colorimetric and fluorescent dual-channel cyanide ion probe using crosslinked polymer microspheres functionalized with protonated Brooker's merocyanine

et al. 2015

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“…Numerous efforts have been devoted to the development of chemosensors for anions such as dihydrogenphosphate [8e12], fluoride [13e16], acetate [17] and cyanide [18,19] due to their important role in biology, medicine, catalysis and the environment [20e23]. Among the different anions, the fluoride ion is widely used in a number of applications such as dental care, treatment of osteoporosis, fluoridation of water supplies, etc.…”

Section: Introductionmentioning

confidence: 99%