A near-infrared fluorescent sensor for detection of cyanide in aqueous solution and its application for bioimaging

Abstract

A new NIR fluorescent sensor based on an amine-substituted heptamethine cyanine dye displayed a highly selective fluorescence enhancement with cyanide in aqueous solutions, and was applied for the imaging of anthropogenic and biogenic cyanide.

A novel glycoconjugated N-acetylamino aldehyde hydrazone azo dye as chromogenic probe for cyanide detection in water

“…A comparison of the main analytical features of the proposed method was made with many of the previously published spectrophotometric methods [21][22][23][24][25][26][27] is summarized in Table 2. These method exhibited low detection limit (about 2-40 mol L −1 ) and serious interferences by halides ions [25].…”

“…Recently, we reported a new glycoconjugated water soluble chemosensor [20] able to detect the cyanide anions in pure water but with a low detection limit, about 2.0 × 10 −5 mol L −1 , which is similar to the most recently reported colorimetric methods for cyanide determination [21][22][23][24][25][26][27]. The response of the chemosensor toward the cyanide anion was based on the nucleophilic attack of cyanide on its carbonyl group in pure water [20].…”

Facile one-pot synthesis of fluorescent hyperbranched polymers for optical detection of glucose

“…It was mainly caused by intermolecular self-absorption, fluorescence quenching, and energy conversion of collision at high concentration. [18][19][20][21][22] APBA was used in modification to endow HPAMAMs with glucose-sensitive property. Phenylboronic acid has been widely utilized for the design of chemosensors in the detection of saccharides over the past decades.…”

Chalcone derivatives as fluorescence turn-on chemosensors for cyanide anions

“…Over the past ten years, optical chemosensors for cyanide anion, in which a change in color, fluorescence intensity or spectral position corresponding to the chemical interaction between sensor and cyanide is monitored, have attracted growing interests due to their simple, inexpensive, and rapid implementation [3,[8][9][10][11][12][13]. Generally, optical chemosensors for cyanides are designed based on the characteristic properties of cyanide anion, such as its strong nucleophilicity, high binding affinity and similarity with halogen anion (CN − is also called pseudohalogen).…”