Journal of Chemical Sciences | |
A new class of efficient 4-[(nitro substituted-phenyl)-hydrazonomethyl]- 1-phenyl-1H-pyrazole-3-carboxylate derived colorimetric chemosensor for selective sensing of fluoride and other biologically important anions | |
BABITA MALIK1  SUMAN SWAMI1  ARUNAVA AGARWALA1  RAHUL SHRIVASTAVA1  | |
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关键词: Pyrazole; receptor; sensor; anions; fluoride ion.; | |
DOI : | |
来源: Indian Academy of Sciences | |
【 摘 要 】
A new class of efficient colorimetric chemosensors derived from 4-[(nitro substituted-phenyl)-hydrazonomethyl]-1-phenyl-1H-pyrazole-3-carboxylate have been synthesized and characterized. The synthesized receptors exhibit instant color change from yellow to dark purple along with significant bathochromicshifts when interacted with fluoride ions. The UV-Visible and ¹H NMR titration experiments revealed that 4-[(4-nitro-phenyl)-hydrazonomethyl]-1-phenyl-1H-pyrazole-3-carboxylate derivatives showed selective sensing of fluoride ions in preference to Clâ», Brâ», Iâ», PFâ»â», HSOâ‚„â», ClOâ‚„â» , CH₃COOâ» and Hâ‚‚POâ‚„â» ions while 4-[2,4-dinitro-phenyl)-hydrazonomethyl]-1-phenyl-1H-pyrazole-3-carboxylate derivatives showed sensing of acetate, dihydrogen phosphate ion and fluoride ion in organic media.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912040509340ZK.pdf | 136KB | download |