2016
DOI: 10.1007/s10895-016-2003-0
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A Ratiomeric Fluorescent Sensor for Zn2+ Based on N,N′-Di(quinolin-8-yl)oxalamide

Abstract: A new ratiometric fluorescent sensor (DQO) based on N,N'-Di(quinolin-8-yl) oxalamide has been designed and synthesized for selective detection of Zn. The fluorescence ratio (I /I) of DQO was enhanced 10-fold when Zn was present in a buffer aqueous solution at pH 8.66. The sensor showed linear response toward Zn in the concentration range 0-15 μM, and the detection limit was calculated to be 2.4 μM. A Job's plot implied the formation of a DQO/Zn complex with 1:1 stoichiometry, and the apparent association const… Show more

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Cited by 21 publications
(3 citation statements)
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“…Similarly, our synthesized oxalamide-based compound [OX(PID) 2 ] having comparative binding constants and LODs are mentioned below in Table S1 (ESI †). [31][32][33][34][35]…”
Section: Interference Studies Of Various Metal Ionsmentioning
confidence: 99%
“…Similarly, our synthesized oxalamide-based compound [OX(PID) 2 ] having comparative binding constants and LODs are mentioned below in Table S1 (ESI †). [31][32][33][34][35]…”
Section: Interference Studies Of Various Metal Ionsmentioning
confidence: 99%
“…Moreover, Quinoline is also an ideal tool for metal ion uorescence sensing based on good water solubility, good biocompatibility and large Stokes shift [27][28][29]. Generally, the practical chemical sensors mainly rely on various types of uorescence mechanisms, such as ESIPT [30], photoinduced electron transfer (PET) and ICT mechanisms [31][32][33].…”
Section: Introductionmentioning
confidence: 99%
“…Besides, uorescence detection is fast, efficient, and simple. 33,34 For example, imidazole-based compounds showed an increase in emission intensity in the presence of zinc ions. 35 Meanwhile, zinc sensing based on thiazole compounds showed turn on-off emission properties 36 and a strong emission response and a high quantum yield on addition of zinc ions (Fig.…”
Section: Introductionmentioning
confidence: 99%