Reusable polymeric films for fluorometric Al<sup>3+</sup> detection in anti-counterfeiting and security applications
발표자
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초록
내용
The development of three types of hydrazide-derived polymeric probes for the selective fluorescent detection of Al3+ in aqueous media and their anti-counterfeiting applications are described herein. The detection of Al3+ among several metallic cations via formation of Al3+–ligand coordination complexes is successfully demonstrated. Upon addition of Al3+ to an aqueous solution of these polymers, complexes P1–Al3+, P2–Al3+, and P3–Al3+ are formed. They exhibit strong turn-on blue, green, and red fluorescence emissions, respectively, via a metal chelation-enhanced fluorescence mechanism. Finally, the polymeric films are applied to the printing of anti-counterfeiting QR codes on paper. These printed QR codes are expected to be used as concealed and recyclable anti-counterfeiting security tools.