An N,N-carbonyl-bridged dipyrrinone oxime has been synthesized and studied as a potential sensor for organophosphates. The molecular sensor underwent a drastic colorimetric response upon formation of the adduct. The pesticide dimethoate was found to produce the biggest spectral response, with a limit of detection equal to 4.0 ppm using UV-visible spectroscopy. Minimal fluorescence "turn on" via a PET mechanism was seen, and molecular modeling studies were used to explain the lower than expected PET response. The X-ray crystal structure of the fluorescent dipyrrinone oxime was also obtained. © 2012 American Chemical Society.
CITATION STYLE
Walton, I., Davis, M., Munro, L., Catalano, V. J., Cragg, P. J., Huggins, M. T., & Wallace, K. J. (2012). A fluorescent dipyrrinone oxime for the detection of pesticides and other organophosphates. Organic Letters, 14(11), 2686–2689. https://doi.org/10.1021/ol300799f
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