Offer no. 10/13
New bis(2,2'-bithienyl)methane derivative and the method of its preparation, film of the molecularly imprinted polymer, method of its preparation, and its application for selective detection and determination of nitroaromatic compounds
New electrochemical sensors using molecularly imprinted polymer (MIP) for selective recognition, due to ?-? interactions, and determination of several explosive nitroaromatic compounds (NTs), including 2,4,6-trinitrophenol, 2,4,6-trinitrotoluene, 1,3,5-trinitrobenzene, and 2,4-dinitrotoluene were fabricated. For that a new functional monomer, bis(2,2'-bithienyl)-(4-aminophenyl)methane, was designed and synthesized. The NT recognition signals of the MIP films were transduced to the changes of the film resistance using electrochemical impedance spectroscopy (EIS). The limit of detection (LOD) of these chemosensors was in the range of 8 to 30 nM indicating that they are suitable for practical determination of nitroaromatic explosives at toxic concentration (~10 nM) in natural environment. Moreover, selectivity of the chemosensors with respect to common interferences was in the range of 1.7 to 9.1.
Tan-Phat Huynh, Marta Sosnowska, Janusz Sobczak, Chandra Bikram K.C., Vladimir N. Nesterov, Francis D'Souza, Włodzimierz Kutner
- Advantages / Innovative aspects:
- The functional monomer enables selective determination of the NT analytes as well as signal transduction due to conducting properties of the molecularly imprinted polymer prepared with its use.
- Simple and fast preparation method of recognizing materials directly deposited on surface of the transducer of the chemosensor via electropolymerization.
molecularly imprinted polymer, conducting polymer, polymerization, nitroaromatic explosives, electropolymerization
Plastics, Polymers, Measuring sensors, Chemical techniques, Analytical chemistry, Biosensors, Toxicology, Soil contamination, Water pollution, Wastewater
- State of the progress:
stage of research
- Intellectual property rights:
Patent application in United Kingdom
- Publication URL: