Rapid naked eye sensing of fluoride by calix[4]arene upper rim tetra functionalized pentafluorophenyl hydrazone

A neutral electron-deficient, pentafluorophenyl hydrazone-functionalized calix[4]arene, R , showed naked eye detection of fluoride among 19 anions. The formation of R + F − was evidenced by UV-vis, 1 H & 19 F NMR and ESI-MS studies. Variable temperature NMR studies revealed the formation of HF 2...

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Bibliographic Details
Published in:New journal of chemistry 2023-07, Vol.47 (28), p.138-1383
Main Authors: Nehra, Anita, Malik, Apoorva, Sharma, Pragati R, Bandaru, Sateesh, Sharma, Rakesh K
Format: Article
Language:English
Subjects:
Hydrazones
NMR
Nuclear magnetic resonance
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Summary:A neutral electron-deficient, pentafluorophenyl hydrazone-functionalized calix[4]arene, R , showed naked eye detection of fluoride among 19 anions. The formation of R + F − was evidenced by UV-vis, 1 H & 19 F NMR and ESI-MS studies. Variable temperature NMR studies revealed the formation of HF 2 − . DFT and TD-DFT studies demonstrate strong binding interactions between the R and F − . A neutral electron-deficient, pentafluorophenyl hydrazone-functionalized upper rim derivative of calix[4]arene, R , showed naked eye detection of fluoride among 19 anions.
ISSN:1144-0546
1369-9261
DOI:10.1039/d3nj02254d