A colorimetric and ratiometric fluorescent probe for the selective detection of cyanide anions in aqueous media and living cells

Abstract

Based on the internal charge transfer (ICT) mechanism, a novel colorimetric and ratiometric fluorescent probe was developed for highly selective and sensitive detection of cyanide ion in aqueous media.

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

“…Many pyrrole derivatives exist, among which some pyrroles, indoles, carbazoles, BODIPYs, and porphyrins stand out due to the high p-conjugation in these heteroaromatic-polycyclic systems. [50][51][52][53][54][55][56] The pyrrole ring itself has rarely been applied as a molecular probe core in detection chemistry.…”

“…The carbazole ring is a highly conjugated dibenzo-fused pyrrole with unique photophysical properties. Accordingly, Xueyi Sun et al 55 obtained derivative 19, which works as a colorimetric/fluorescent probe based on the ICT process ( Fig. 10a ).…”

A sensitive and selective BINOL based ratiometric fluorescence sensor for the detection of cyanide ions

“…[14][15][16][17][18][19][20][21][22][23][24][25][26][27] Among the uorescent probes, ratiometric probes have a unique advantage of emission at two different wavelengths providing a built-in correction for environmental effects. [28][29][30][31][32][33][34][35][36][37][38][39][40] The integral property of uorescence and chirality of 1,1 0binaphthol (BINOL) and its derivatives have made them potential candidates for asymmetric catalysis as well as uorescent chemosensors. [41][42][43][44][45][46][47][48] Additionally, the uorescence property and the host-guest interaction of these molecules can be manipulated by adding suitable substitution in the major or minor groove of BINOL.…”

A Biocompatible Colorimetric Triphenylamine- Dicyanovinyl Conjugated Fluorescent Probe for Selective and Sensitive Detection of Cyanide Ion in Aqueous Media and Living Cells

“…Compared with other methods, fluorometric and colorimetric responses based on chemical reactions have attracted much attention due to their simple operation, high selectivity, high sensitivity and low cost [ 18 , 19 , 20 , 21 , 22 ]. The sensing mechanisms of fluorometric and colorimetric chemosenors for detecting CN − have been reported over the past few years, including hydrogen bonding reactions [ 23 , 24 , 25 , 26 , 27 ], forming cyanide anion complexes [ 28 , 29 ], electron transfer reactions [ 30 , 31 , 32 ] and nucleophilic addition reactions [ 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 ]. Among them, the nucleophilic addition reactions generally have high selectivity for detecting CN − .…”