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Naphthalene‐Coupled Pyridinium Urea Salt in Fluorometric Sensing of Iodide
Author(s) -
Panja Santanu,
Kumar Abhishek,
Misra Neeraj,
Ghosh Subhasis,
Raza Rameez,
Ghosh Kumaresh
Publication year - 2021
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202100373
Subject(s) - pyridinium , chemistry , iodide , deprotonation , urea , naphthalene , amide , hydrogen bond , salt (chemistry) , aqueous solution , fluorescence , ion , inorganic chemistry , pyridinium compounds , photochemistry , medicinal chemistry , organic chemistry , molecule , physics , quantum mechanics
Naphthalene substituted pyridinium urea and amide 1 and 2 have been designed and synthesized respectively, of which compound 1 served as potential chemosensor for fluorometric detection of I − ions both in organic and semi‐aqueous medium. We found that while basic anions cause deprotonation of the urea and amide H‐bonds, iodide forms weak hydrogen bonds in 1 as established by spectroscopic and theoretical studies. This makes it more suitable to produce charge transfer complex than 2 and enables it to act as a selective sensor for iodide ions.