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A turn-on fluorescent sensor for highly selective recognition of Mg2+ based on new Schiff’s base derivative

Paper ID Volume ID Publish Year Pages File Format Full-Text
26362 43949 2016 6 PDF Available
Title
A turn-on fluorescent sensor for highly selective recognition of Mg2+ based on new Schiff’s base derivative
Abstract

•The receptor HL shows obviously enhancement of fluorescence intensity in the present of Mg2+.•The detection limit of HL for Mg2+ could reach at 10−7 M level.•HL showed a good selectivity to Mg2+ over other metal cations, especially Ca2+, which often responds together with Mg2+.

A new senser Isatin-3-(7′-Methoxychromone-3′-methylidene) hydrazone based on chromone Schiff base was synthesized to detect Mg2+. The complexation behavior of chemosensor with different metal ions in ethanolic solution was studied on UV–vis absorption spectra and fluorescent spectra. Results showed that the chemosensor HL displayed a 70-fold fluorescence enhancement upon the addition of Mg2+ due to the photo-induced electron transfer (PET) effect. On the other hand, metal ions except Mg2+ did not cause significant change in either the absorption or the fluorescence spectrum of HL. In addition, HL showed a good selectivity to Mg2+ over other metal cations, especially Ca2+, which often responds together with Mg2+. Therefore, HL can act as an efficient sensor for magnesium ion.

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Keywords
Fluorescent; Magnesium; Schiff base; Sensor
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A turn-on fluorescent sensor for highly selective recognition of Mg2+ based on new Schiff’s base derivative
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 314, 1 January 2016, Pages 29–34
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us