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    Phenolphthalein Conjugated Schiff Base as a Dual Emissive Fluorogenic Probe for the Recognition Aluminum (III) and Zinc (II) Ions
    (Springer/Plenum Publishers, 2021) Aydin, Duygu; Alici, Meliha Kutluca
    In this study, a new phenolphthalein derivative, FFIZNA, has been planned and successfully prepared in an uncomplicated way. The probe FFIZNA could selectively monitor Al3+ and Zn2+ among other relevant cations with diverse colors through a turn-on emission response in EtOH:HEPES (9/1;v/v) media owing to the chelation enhanced fluorescence (CHEF), prevention of ESIPT, -C=N- isomerization and PET of the probe FFIZNA. The interactions of Al3+ and Zn2+ with the probe FFIZNA were confirmed by emission spectroscopy, Job's plot and H-1-NMR titration substantiated 1:2 reaction stoichiometry between FFIZNA and Al3+ and Zn2+. The time-response study displayed that the emission of FFIZNA with Al3+ and Zn2+, rapidly boosted and reached the stable value in less than 3.0 and 4.0 min, respectively. Therefore, the FFIZNA has successfully been utilized to the dual recognition of Al3+ and Zn2+ in solutions.
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    Phentroimidazole Based Fluorescence Turn on Sensor for Highly Sensitive Detection of Zn2+ Ions
    (Springer/Plenum Publishers, 2020) Alici, Meliha Kutluca
    FIH sensor-based fluorescence was fabricated and analyzed employing H-1, C-13-, APT-NMR, elemental analysis and ATR-FTIR spectroscopy. The fluorescence properties of the fabricated FIH sensor towards metal ions were investigated by fluorescence spectroscopy. It was determined that prepared sensor had the highest fluorescence sensitivity towards Zn2+ ions which was 35 times more than other metal ions (Ag+, Li+, Ba2+, Mg2+, Cu2+, Ni2+, Cr3+, Pb2+, Ca2+, Fe2+, Fe3+, Co2+, Hg2+, Cd2+, Rb2+, Cs2+, and Al3+) while it was being no effect for the commonly used metal ions. From the point of this view, it can be easily said that this system can be applied as fluorescence sensor for Zn2+ ions.