Fluorescent chemosensor for lethal cesium detection using thin film membrane

ABSTRACT

Two new simple fluoroionophores viz. L1 and L2 were synthesized and characterized. These two fluoroionophores were shown to be sensitive and selective for Cs⁺ among the 12 metal ions in organic HEPES buffer medium by absorption and fluorescence. An attractive glowing green and blue color emission were observed in the presence of Cs⁺ for L1 and L2.The fluoroionophores were found to be as an effective fluorescence chemosensors for Cs⁺ ions with the detection limit of 0.03 ppm and 0.49 ppm, respectively. In order to evaluate the chemosensor activity in organo-aqueous medium, organic thin films (OTFs) and TLC kits of fluoroionophores viz. L1 and L2 were formed using physical coating method.

KEYWORDS:

• Ratiometric fluorescent sensor
• Cs detection
• Organic thin film

Acknowledgments

Uday Narayan Guria thanks to DAE-BRNS for fellowship. Thanks to Syed Samim Ali and Ankita Gangopadhyay for their assistance throughout the work.

Supplementary material

Supplementary data for this article can be accessed here.

Additional information

Funding

This work was supported by the DAE-BRNS [Project No. 36(1)/14/12/2016-BRNS/36012].