Novel pyrenylbenzylidene-malononitrile derivative mixed with cellulose acetate electrospun nanofibrous sheets for hydrazine detection
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Author list: Mayurachayakul P.; Thianchai J.; Attakul N.; Pratumyot K.; Sukwattanasinitt M.; Srikittiwanna K.; Niamnont N.
Publisher: Royal Society of Chemistry
Publication year: 2024
Journal: New Journal of Chemistry (1144-0546)
Volume number: 48
Issue number: 36
Start page: 16095
End page: 16106
Number of pages: 12
ISSN: 1144-0546
eISSN: 1369-9261
Languages: English-Great Britain (EN-GB)
Abstract
A new pyrenylbenzylidene-malononitrile (P2) was successfully synthesized via the Suzuki coupling reaction and Knoevenagel condensation using nano Cu as a catalyst. The compound P2 could detect hydrazine in 10% THF-PBS, pH 7.4, with a limit of detection (LOD) of 19.46 nM. Moreover, the P2-CA nanofibrous sheets were fabricated by combining compound P2 and cellulose acetate. The LOD of P2-CA nanofibrous sheets was found to be 0.02% w/v for hydrazine detection. The quantity of hydrazine vapor was recognized and quantified by analyzing fluorescence images acquired with a smartphone camera and a portable blacklight lamp that generates light with a wavelength of 365 nm using the ImageJ application. The concentration range of 0.025-1% w/v was accurately determined by employing ImageJ for fluorescence image analysis. Both compound P2 and P2-CA nanofibrous sheets are selective for hydrazine. Also, the mechanism of compound P2 and hydrazine was studied via1H NMR titration, FT-IR experiments and DFT calculations. In addition, the P2-CA nanofibrous sheet has the ability to detect hydrazine vapor in actual samples collected from the environment. Hence, the compound P2 and P2-CA nanofibrous sheets have significant promise as highly effective sensors for detecting hydrazine in water across many environments and industries. © 2024 The Royal Society of Chemistry.
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