Revisiting β-dicyanovinyl substituted calix[4]pyrrole : toward the highly selective detection of hydrazine in solution

Abstract

The selective detection and quantification of hydrazine, a hazardous pollutant commonly used in industries, was performed by UV-spectroscopy with a repurposed β-dicyanovinyl substituted calix[4]pyrrole as chemosensor. Selectivity was evaluated in acetonitrile towards various nitrogen-containing compounds and a nucleophilic thiol. Moreover, influence of several parameters (time, water content and temperature) on hydrazine detection of the chemosensor was evaluated. This work allows the sensing of hydrazine with a LOD of 1.3 mg/L and a linear response on the 40-1000 μM range. Naked eye detection was also performed.

Recent developments in calix[4]pyrrole (C4P)-based supramolecular functional systems

“…1). [30][31][32][33][34][35] Considering the importance of these systems in a wide range of research fields and our major research programme to develop green synthetic protocols for various organic and supramolecular functional systems, [36][37][38][39][40][41][42][43] recently, our group also reported a simple and green approach for the preparation of diverse C4Ps in the presence of deep eutectic solvents (DES) of N,N′-dimethyl urea and L-(+)-tartaric acid. 44 Furthermore, recently, Wang and co-workers assembled various simple and functionalized C4P structures utilizing the chalcogen bonding (Se⋯O)-catalytic approach.…”