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  • Title: A turn-on fluorescence sensor for the highly selective detection of Al3+ based on diarylethene and its application on test strips.
    Author: Lv J, Fu Y, Liu G, Fan C, Pu S.
    Journal: RSC Adv; 2019 Mar 28; 9(18):10395-10404. PubMed ID: 35520894.
    Abstract:
    A novel turn-on fluorescent sensor for Al3+ based on photochromic diarylethene with a 2-hydroxybenzhydrazide unit has been successfully designed and synthesized. The photochromic and fluorescent characteristics were studied methodically in methanol under irradiation using UV/vis light and induced by Al3+/EDTA. This fluorescent sensor was highly selective toward Al3+ with an obvious fluorescent color change from dark blue to blue. The Job's plot and mass spectrometry (MS) analysis indicate a binding stoichiometry of 1 : 1 between the fluorescent sensor and Al3+. Moreover, a test strip containing this fluorescent sensor was prepared to allow for the easy detection of Al3+ in water. Finally, a logic circuit was designed using four input signals (In1: UV; In2: vis; In3: Al3+; In4: EDTA) and one output signal.
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