A fluorogenic and chromogenic dual sensor for the detection of cyanide and copper(ii) in water samples and living cells

Abstract

Here we describe a simple fluorescent sensor based on intra molecular charge transfer to detect cyanide in aqueous media selectively with a very good detection limit and cascade recognition of aq. copper(ii) ions.

Ecological and Economic Efforts in the Development of Molecular Sensors for the Optical Detection of Cyanide Ions

“…In particular, pyrene has been widely used in cyanide sensing with remarkable results. In this section, a family of recognized and novel cyanide acceptors, such as dicyanovinylene ( 16 ), [76] indolium salt ( 17 ), [77] Meldrum's acid ( 18 ), [78] bisimidazole ( 19 ), [79] and hihidroxyimine ( 20 ) [80] was used (Figure 8a).…”

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

“…The results conrmed the selective detection of CN À based on nucleophilic addition of CN À ion in the pconjugated position of dicyanovinyl moiety. 16,[54][55][56][57][58][59][60][61][62] In addition, the structure and the binding mechanism were further analysed by FT-IR analysis of free BBCN and BBCN-CN À (Fig. S10 †).…”

“…In this regard, development of uorescent dosimeter for the detection of cyanide ion will be a better choice. [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.…”

Highly sensitive turn-off fluorescent detection of cyanide in aqueous medium using dicyanovinyl-substituted phenanthridine fluorophore

“…This result conrms that probe 7 as a CN À sensing platform has great potential for the determination of cyanide ions in environmental water samples. 26…”