首页|Visual Hg(II) sensing in aqueous solution via a new 2,5-Bis(4-pyridyl) thiazolo[5,4-d]thiazole-based fluorescence coordination polymer
Visual Hg(II) sensing in aqueous solution via a new 2,5-Bis(4-pyridyl) thiazolo[5,4-d]thiazole-based fluorescence coordination polymer
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NSTL
Elsevier
A new fluorescence coordination polymer [Zn(Py2TTz)(5-OH-IPA)]n (1) (Py2TTz = 2,5-bis(4-pyridyl)thia zolo[5,4-d]thiazole, 5-OH-IPA = 5-hydroxyisophthalic acid dianion) was synthesized, which exhibited the characteristics of fluorescence quenching and bathochromic shift toward Hg(II) in aqueous solution at pH 7.00. Mechanism study showed that the interactions between Hg(II) ions and Py2TTz ligands in 1 were responsible for the fluorescence emission change. Thanks to the specific interactions between 1 and Hg(II), excellent selectivity was achieved both in aqueous solution and in solid test paper. The detec-tion limit of 1 for Hg(II) sensing was 125.76 nmol L-1 and a linear rang was 1.00-10.00 lmol L-1. More importantly, satisfactory recovery and accuracy of 1 for Hg(II) sensing were also obtained in buffer-free real water samples. (c) 2021 Elsevier B.V. All rights reserved.
Fluorescence coordination polymerWater stableMercury ion detectionBuffer-freeExcellent selectivityMETAL-ORGANIC FRAMEWORKSELECTIVE DETECTIONMERCURYIONSSENSORSREMOVALLIGANDSFE(III)WATERMOFS
NSTL
Elsevier
