Synthesis of 5-nitrovanillin in low temperature as cyanide anion sensor

R Rahmawati (Chemistry Education Study Program, University of Mataram, Indonesia)
Syarifa Wahidah Al Idrus (Chemistry Education Study Program, University of Mataram, Indonesia)
Supriadi Supriadi (Chemistry Education Study Program, University of Mataram, Indonesia)
Lalu Sulman (Chemistry Education Laboratory, FKIP, University of Mataram, Indonesia)

Acta Chimica Asiana
Vol. 4 No. 1 (2021)

In terms of organic sensor, the molecular structure affects a compound's ability to be used as a colorimetric chemosensor. Here, we present a simple synthesis technique for 5-nitrovanillin sensor. It has been successfully synthesized using nitric acid as a source of nitro groups. Dichloromethane DCM was used as a solvent, and the synthesis was carried out at low temperatures (under 5°C). The method produces a good yield. The nitro group attached to the chemosensor plays a role in prolonging the electron delocalization. Its effect is in the process of anion recognition by the chemosensor. The formation of a sensor-analyte complex between the chemosensor and anion produces a color change in the solution