A highly selective colorimetric chemosensor for cyanide and sulfide in aqueous solution: experimental and theoretical studies

Abstract

A selective chemosensor was developed for the colorimetric detection of CN− and S2− in aqueous solution.

A novel bifunctional chemosensor for bioimaging in living cells with highly sensitive colorimetric and fluorescence detection of CN− and Al3+

“…57 The relatively low detection limit of 1o compared to recently reported cyanide sensors Scheme 2 Synthetic route of diarylethene 1o. (Table S1, ESI †) [58][59][60][61][62] indicates its potential use as a chemosensor for cyanide monitoring. We sought to further investigate the binding mechanism of 1o and CN À using 1 H NMR (CD 3 CN-d 3 , 400 MHz) titration experiments (Fig.…”

Biomimetic hydrogen-bonding cascade for chemical activation: telling a nucleophile from a base

“…While the precise determination of rate constants was hampered by the fast reaction rate, the calculated k 2 value (1.3 Â 10 3 M À1 s À1 ) is among that of the fastest-responding cyanide probes that operate by a covalent capture strategy. 32,[43][44][45][46][47][48][49][50] With 20 equiv. of cyanide anion, the reaction half-life t 1/2 is as short as 0.53 s.…”

Naphthalene Flanked Diketopyrrolopyrrole: A New Functional Dye Based Optical Sensors for Monitoring Cyanide Ions in Water

“…For example, CN − can inhibit oxygen transfer in the human body by binding to the active sites of cytochrome C oxidase, which can lead to cardiovascular, respiratory, and central nervous system diseases. [ 1,2 ] WHO has specified the maximum permissible level of CN − in food and water to be 1.9 µ m (70 ppb). [ 3 ] Despite the high toxicity of the CN − , it is widely used in many industrial procedures such as petrochemical industries, metallurgy, gold mining, electroplating, manufacture of dyes, fibers, resins, and plastics.…”

“…For example, CN − can inhibit oxygen transfer in the human body by binding to the active sites of cytochrome C oxidase, which can lead to cardiovascular, respiratory, and central nervous system diseases. [1,2] WHO has DPP derivatives are incorporated in semiconductor electronic devices including organic field-effect transistors (OFETs), OFET based chemical sensors, organic photovoltaics (OPVs), perovskite solar cells (PSCs), and organic light-emitting diodes (OLEDs). [31][32][33][34][35][36][37] In addition, DPP derivatives have been widely developed for fluorescent probes in sensing, bioimaging, and related techniques such as two-proton fluorescence imaging, photodynamic and photothermal therapy materials.…”