Related Experiment Video
Updated: Aug 8, 2025

On-line Analysis of Nitrogen Containing Compounds in Complex Hydrocarbon Matrixes
Published on: August 5, 2016
Explicating the recognition phenomenon of hazardous nitro-aromatic compound from contaminated environmental and
Amita Mondal1,2, Abhijit Hazra1,3, Mohit Kumar Chattopadhyay1
1CSIR-Central Mechanical Engineering Research Institute, M. G. Avenue, Durgapur 713209, India.
Abstract:
In the quest of recognizing hazardous nitro-aromatic compounds in water, two pyridine-functionalized Schiff-base chemosensors, DMP ((E)-N-(3,4-dimethoxybenzylidene)(pyridin-2-yl)methanamine)) and MP (4-((E)-((pyridin-2-yl)methylimino)methyl)-2-ethoxyphenol) have been synthesized to detect mutagenic 2,4,6-Trinitrophenol (TNP) in soil, water as well as cellular matrices by producing turn-off emission responses as a combined consequence of PET and RET processes. Several experimental analyses including ESI-MS, FT-IR, photoluminescence, 1H NMR titration, and the theoretical calculations ascertained the formation and sensing efficacies of the chemosensors. The analytical substantiations revealed that structural variation of the chemosensors played a significant role in improving the sensing efficiency, which would certainly be worthwhile in developing small molecular TNP sensors. The present work depicted that the electron density within the MP framework was more than that of DMP due to the intentional incorporation of -OEt and -OH groups. As a result, MP represented a strong interaction mode towards the electron-deficient TNP with a detection limit of 39 μM.
Related Concept Videos
Electrophilic Aromatic Substitution: Nitration of Benzene
Basicity of Heterocyclic Aromatic Amines
NMR Spectroscopy of Aromatic Compounds
Nucleophilic Aromatic Substitution: Elimination–Addition
ortho–para-Directing Activators: –CH3, –OH, –⁠NH2, –OCH3
Five-Membered Heterocyclic Aromatic Compounds: Overview

