A novel selective chemosensor for Mg<sup>2+</sup> detection based on quinoline-hydrazone-crown ether
IR@NISCAIR: CSIR-NISCAIR, New Delhi - ONLINE PERIODICALS REPOSITORY (NOPR)
View Archive Info| Field | Value | |
| Title |
A novel selective chemosensor for Mg<sup>2+</sup> detection based on quinoline-hydrazone-crown ether
|
|
| Creator |
Ma, Ruifang
Li, Qiaohong Zhang, Qiang |
|
| Subject |
Quinoline-hydrazone-crown ether
Synthesis Alkali and alkaline-earth cations Mg<sup>2+</sup> Chemosensor |
|
| Description |
120-126
A novel Mg<sup>2+</sup>-selective chemosensor based on quinoline-hydrazone-crown ether (<strong>L1</strong>) has been synthesized and characterized by <sup>1</sup>HÂ NMR, elemental analysis and ESI-mass spectrometry. The absorption and emission spectra of <strong>L1</strong> have been investigated in the presence of alkali and alkaline-earth cations (Li<sup>+</sup>, Na<sup>+</sup>, K<sup>+</sup>, Mg<sup>2+</sup>, Ca<sup>2+</sup>, Sr<sup>2+ </sup>and Ba<sup>2+</sup>). Mg<sup>2+ </sup> results in an instant color change of <strong>L1</strong> from colorless to yellow in ethanol. Upon binding of Mg<sup>2+</sup>, a significant fluorescence enhancement is triggered in acetonitrile. Thus, <strong>L1</strong> is expected to be used as an interesting Mg<sup>2+</sup> sensitive chemosensor. The 1:1 stoichiometry binding mode of <strong>L1</strong> with Mg<sup>2+</sup> is supported by the Benesi-Hildebrand analysis. The binding constants (lg<em>K</em>) in ethanol and acetonitrile are found to be 4.54 and 3.57 by the goodness of the linear fitting of the Benesi-Hildebrand plot from the results of Ultravioletâvisible (UV-Vis) and fluorescence titrations, respectively. |
|
| Date |
2018-01-11T09:54:08Z
2018-01-11T09:54:08Z 2018-01 |
|
| Type |
Article
|
|
| Identifier |
0975-0983(Online); 0376-4699(Print)
http://nopr.niscair.res.in/handle/123456789/43413 |
|
| Language |
en_US
|
|
| Rights |
<img src='http://nopr.niscair.res.in/image/cc-license-sml.png'> <a href='http://creativecommons.org/licenses/by-nc-nd/2.5/in' target='_blank'>CC Attribution-Noncommercial-No Derivative Works 2.5 India</a>
|
|
| Publisher |
NISCAIR-CSIR, India
|
|
| Source |
IJC-B Vol.57B(01) [January 2018]
|
|