Oxime-Functionalized Polydiacetylene Nanocomposite Sensor for Equipment-Free On-Site Detection Of Organophosphate Insecticide Chlorpyrifos Ethyl
- 1Iowa State University , , , ,
Abstract
A novel oxime-incorporated polydiacetylene-functionalized molecule (PCDA-OX) was synthesized for real-time, rapid, and selective detection of the organophosphate insecticide chlorpyrifos ethyl, which is widely used in agricultural fields globally. Nanocomposites containing PCDA-OX molecules were fabricated within a cellulose acetate matrix using an electrospinning technique, followed by chemical hydrolysis to obtain regenerated cellulose-based sensing materials. Comprehensive characterization was performed using scanning electron microscopy, nuclear magnetic resonance, Fourier-transform infrared spectroscopy, and an Instron tensile tester. Exposure to the chlorpyrifos ethyl triggered an instantaneous chromatic transition from blue to red/pink, enabling naked eye detection without instrumentation. The proposed sensor exhibited high selectivity against other classes of insecticides and achieved a limit of detection of 40 mmol. The sensing platform offers a simple, rapid, and field-deployable approach for organophosphate monitoring, offering a promising strategy for protecting human health and saving lives.
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BibTeX
@article{alam2026oximefunctionalized,
title = {{Oxime-Functionalized Polydiacetylene Nanocomposite Sensor for Equipment-Free On-Site Detection Of Organophosphate Insecticide Chlorpyrifos Ethyl}},
author = {AKM Mashud Alam and Demetrius A. Finley and George A. Kraus and Chunhui Xiang},
journal = {ACS omega},
year = {2026},
month = sep,
doi = {10.1021/acsomega.6c04463},
url = {https://europepmc.org/article/PMC/PMC13670327},
note = {CC BY-NC-ND},
}
RIS
TY - JOUR
TI - Oxime-Functionalized Polydiacetylene Nanocomposite Sensor for Equipment-Free On-Site Detection Of Organophosphate Insecticide Chlorpyrifos Ethyl
AU - AKM Mashud Alam
AU - Demetrius A. Finley
AU - George A. Kraus
AU - Chunhui Xiang
PY - 2026
DA - 2026/09/30
JO - ACS omega
DO - 10.1021/acsomega.6c04463
UR - https://europepmc.org/article/PMC/PMC13670327
AB - A novel oxime-incorporated polydiacetylene-functionalized molecule (PCDA-OX) was synthesized for real-time, rapid, and selective detection of the organophosphate insecticide chlorpyrifos ethyl, which is widely used in agricultural fields globally. Nanocomposites containing PCDA-OX molecules were fabricated within a cellulose acetate matrix using an electrospinning technique, followed by chemical hydrolysis to obtain regenerated cellulose-based sensing materials. Comprehensive characterization was performed using scanning electron microscopy, nuclear magnetic resonance, Fourier-transform infrared spectroscopy, and an Instron tensile tester. Exposure to the chlorpyrifos ethyl triggered an instantaneous chromatic transition from blue to red/pink, enabling naked eye detection without instrumentation. The proposed sensor exhibited high selectivity against other classes of insecticides and achieved a limit of detection of 40 mmol. The sensing platform offers a simple, rapid, and field-deployable approach for organophosphate monitoring, offering a promising strategy for protecting human health and saving lives.
SN - 2470-1343
ER -