Skip to main content

Research Repository

Advanced Search

Self-plasticized, lumogallion-based fluorescent optical sensor for the determination of aluminium (III) with ultra-low detection limits

Self-plasticized, lumogallion-based fluorescent optical sensor for the determination of aluminium (III) with ultra-low detection limits Thumbnail


Abstract

Aluminium-selective ion optical sensor based on covalently attached lumogallion methacrylate was synthesized and investigated in this study. Lumogallion based derivatives were copolymerized with various methacrylate monomers via a simple one step free radical polymerization to produce a "self-plasticized" copolymer. The mechanical properties of the copolymer were suitable for the fabrication of plasticizer-free optical membranes. We demonstrate that covalently attached lumogallion moieties provide adequate functionality to the optical film thus achieving a very simple, one component sensing membrane. Fluorescence experiments demonstrated excellent sensitivity towards aluminium (III) ions with the detection limits found at 4.8 x 10-12 M. Furthermore, proposed sensor displays high selectivity towards aluminium over a number of biologically relevant cations. Moreover, the synthesized copolymer was used for the fabrication of nanoparticles that exhibit strong fluorescence upon contact with aluminium (III) ions. It is anticipated that lumogallion-based copolymers may form the basis for the development of highly sensitive and robust aluminium selective sensors capable of in situ measurements.

Acceptance Date Dec 8, 2019
Publication Date Mar 8, 2020
Publicly Available Date Mar 28, 2024
Journal Analytica Chimica Acta
Print ISSN 0003-2670
Publisher Elsevier
Pages 141-148
DOI https://doi.org/10.1016/j.aca.2019.12.021
Keywords optical sensors, aluminium, lumogallion, fluorescence
Publisher URL https://doi.org/10.1016/j.aca.2019.12.021

Files




Downloadable Citations