A reversible colorimetric chemosensor for “Naked Eye” sensing of cyanide ion in semi-aqueous solution

Naked Eye Detection of Carbonate, Hydroxide, and Cyanide Ions with 1,4′‐Diazaflavonium Bromides: A Simple Spectrophotometric Method for Cyanide Determination

“…However, there are a few colorimetric chemosensors to sense cyanide ion with naked eye in the literature . The detection limits based on visual color changes were about 5 × 10 −4 and 5 × 10 −5 M for the proposed sensors . In the presented study, the corresponding detection limit is 2.4 × 10 −4 M for cyanide ion with C7 .…”

“…Some fluorescent chemosensors were reported to determine cyanide ion in the literature . However, there are a few colorimetric chemosensors to sense cyanide ion with naked eye in the literature . The detection limits based on visual color changes were about 5 × 10 −4 and 5 × 10 −5 M for the proposed sensors .…”

Chemosensors based on N-heterocyclic dyes: advances in sensing highly toxic ions such as CN− and Hg2+

“…Thus, some quinolines present crucial applications given that p-extended-systems favor p-p* and n-p* electronic transitions, and besides, their intrinsic photochemical stability makes them excellent candidates for use as uorophores in the design of chemosensors. [1][2][3][4]69,70 This is the case of probe 45 designed by Wang et al, 75 which allowed the colorimetric detection of CN À in semi-aqueous media. This probe works by strategy III, where the deprotonation of the hydrazone moiety produced an anionic species, leading to a redshi from 395 to 520 nm.…”

“…This is the case of probe 45 designed by Wang et al , 75 which allowed the colorimetric detection of CN − in semi-aqueous media. This probe works by strategy III , where the deprotonation of the hydrazone moiety produced an anionic species, leading to a redshift from 395 to 520 nm.…”

A naphthoquinone based colorimetric probe for real-time naked eye detection of biologically important anions including cyanide ions in tap water: experimental and theoretical studies

“…[39][40][41][42] Correspondingly, cyanide is one of the most toxic anions and the World Health Organization has set its maximum permissive level in drinking water at 1.9 mM. [43][44][45][46][47] However, it is still indispensable in some industrial usage such as electroplating, synthesis of ne chemicals, plastic production and gold mining. 48 Despite a huge number of anion sensors published in literature, there are very limited modulus which can detect cyanide ions, simultaneously with uoride, acetate and hydroxide ions.…”