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Arene-based fluorescent probes for the selective detection of iron

机译:基于芳烃的荧光探针,用于铁的选择性检测

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摘要

Pyridine-2,6-dicarboxamide based probes containing phenyl (L1), naphthyl (L2) and anthracenyl (L3) groups have been synthesized and screened towards Na+, Mg2+, Ca2+, Cr3+, Mn2+, Mn3+, Fe2+, Fe3+, Co2+, Ni2+, Cu2+, Zn2+, Hg2+, Cd2+ and Pb2+ ions. Probes L2 and L3 exhibited remarkable sensing for Fe2+ and Fe3+ ions with L3 being particularly selective. Collective studies comprising of Job's plot, Benesi-Hildebrand fitting, Stern-Volmer plot and detection limit display notable sensing ability of probe L3 for Fe3+ as compared to Fe2+ ion. Competitive binding studies in presence of other metal ions further illustrated the high efficiency of L3. The probe L3 binds to Fe3+ ion by forming a 1 : 1 complex with the apparent association constant (K-a) of 3.31 x 10(3) M-1. L3-Fe3+ system is shown to have potential applications in logic gate and cell imaging.
机译:合成了含有苯基(L1),萘基(L2)和蒽基(L3)基团的基于吡啶-2,6-二甲酰胺的探针,并针对Na +,Mg2 +,Ca2 +,Cr3 +,Mn2 +,Mn3 +,Fe2 +,Fe3 +,Co2 +,Ni2 +进行筛选,Cu2 +,Zn2 +,Hg2 +,Cd2 +和Pb2 +离子。探针L2和L3对Fe2 +和Fe3 +离子表现出非凡的感测力,其中L3具有特别的选择性。集体研究包括Job's图,Benesi-Hildebrand拟合,Stern-Volmer图和检测限,显示探针L3与Fe2 +离子相比对Fe3 +具有显着的感测能力。在其他金属离子存在下的竞争结合研究进一步说明了L3的高效性。探针L3通过形成表观缔合常数(K-a)为3.31 x 10(3)M-1的1:1络合物与Fe3 +离子结合。 L3-Fe3 +系统显示出在逻辑门和单元成像中的潜在应用。

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