A benzimidazole functionalized NDI derivative for recyclable fluorescent detection of cyanide in water

Abstract

An NDI-based chemosensor (L2) was synthesized via a one step reaction; L2 showed recyclable CN− detection properties in water.

Morphology-Controlled Synthesis of the Metal–Organic Framework-Derived Nanorod Interweaved Lamellose Structure Co3O4 for Outstanding Catalytic Combustion Performance

“…Therefore, we synthesized the L2 compound, which served as a linker to control the shape structure construction of MOFs. In our preparatory work, the L2 linker could be constructed by a simple and fast synthesis of 2-amino-benzimidazole and naphthalene-1,4,5,8-tetracarboxylic acid (seen in Scheme ). The L2 linker was an excellent linker material of MOFs due to the existence of the amide linkage and naphthalene, which could anchor the metal ions, whereas the conjugated π–π of naphthalene could combine with the presence of cyclobenzene of VOCs, which was beneficial for the combustion of VOCs.…”

“…The L2 linker was synthesized according to the literature. 17 Ten millimoles of 1,4,5,8-naphthalenetetracarboxylic dianhydride and 20 mmol of 2-aminobenzimidazole were dissolved into 25 mL of DMF in a 50 mL three-neck flask. The mixture was stirred at 120 °C for 24 h. The mixture was cooled to room temperature, and the yellow sample was collected by centrifugation and washed with ethanol and water.…”

“…The L2 linker was synthesized according to the literature . Ten millimoles of 1,4,5,8-naphthalenetetracarboxylic dianhydride and 20 mmol of 2-aminobenzimidazole were dissolved into 25 mL of DMF in a 50 mL three-neck flask.…”

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

“…Similarly, Lin and co-workers 67 synthesized and studied the bis-benzimidazole 36 as a fluorescent probe for sensing cyanide in HEPES : DMSO buffer solution (1 : 9), which also has a naphthalene-tetracarboxylic diimide (NDI) fluorophore ( Fig. 15b ).…”

Electrochemical Evaluation of a Napthalene Diimide Derivative for Potential Application in Aqueous Organic Redox Flow Batteries

“…Typically, the electronic properties of napthalene diimides (NDIs) can be tuned by adding either electron‐donating or electron‐withdrawing groups to the naphthalene core, whereas the solubility is modified by substitution on the imide nitrogens . Although water‐soluble NDI materials have been synthesized and extensively studied, an electrochemical investigation of NDIs in aqueous systems has not yet been reported. Furthermore, they have not previously been considered for aqueous flow battery applications.…”