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A New Benzothiazin-functionalized Calix[4]arene-based Fluorescent Chemosensor for the Selective Detection of Co2+ Ion.
- Source :
- Journal of Fluorescence; Jul2021, Vol. 31 Issue 4, p1075-1083, 9p
- Publication Year :
- 2021
-
Abstract
- Calixarenes, which have a great place in supramolecular chemistry, have become the most prominent macrocyclic compounds in synthetic organic chemistry due to their easy synthesis and functionalization. In this study, p-tert-butyl calix[4]arene dihydrazide derivative was synthesized and then reacted with 3-oxo-3,4-dihydro-2 H-benzo[b][1,4] thiazin-2-ylideneacetyl chloride to prepare new calixarene based chromophore compound 4. The structure of the synthesized compound was elucidated by spectroscopic methods such as <superscript>1</superscript>H NMR <superscript>13</superscript>C NMR and FT-IR spectroscopy. Chromogenic and fluorescence properties of compound 4 were evaluated. It was observed from both studies that compound 4 was Co<superscript>2+</superscript> selective and shows fluorescence Switched-off behavior. Stoichiometry, binding constant and the detection limit were calculated. The stoichiometry between compound 4 and Co<superscript>2+</superscript> was found to be 1:1. The binding constant value (K) was calculated as 666.67 M<superscript>− 1</superscript> using Benesi–Hildebrand equation, while the detection limit for Co<superscript>2+</superscript> ion was calculated as 0.0465 µM. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10530509
- Volume :
- 31
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Journal of Fluorescence
- Publication Type :
- Academic Journal
- Accession number :
- 150934419
- Full Text :
- https://doi.org/10.1007/s10895-021-02745-w