Naphthalen-2-yl-N′-(2-hydroxybenzoyl)benzohydrazonate as dual metal ion chemosensor for the detection of Fe3+ and Na+ ions

Chemistry of Inorganic Materials Pub Date : 2024-12-01 DOI:10.1016/j.cinorg.2024.100080

P. Kalaivani , R. Lokeshwari , R. Shankar , S. Cyril Christan , R. Prabhakaran

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Abstract

New probe naphthalen-2-yl-N′-(2-hydroxybenzoyl)benzohydrazonate (NHBH) chemosensor has been prepared and characterized by IR, ¹H NMR, ¹³C NMR and Mass Spectroscopic techniques. The probe (NHBH) was subjected to study its cation sensing ability with twelve different metal chloride salt (Al³⁺, Ca²⁺, Co²⁺, Cr³⁺, Fe³⁺, Cu²⁺, Mn²⁺, Ni²⁺, Zn²⁺, Hg²⁺, K⁺ and Na⁺) in 1:4 methanol water medium by using absorption and emission titration experiments. The results showed that the probe detected Fe³⁺ and Na ⁺ ions by showing absorption enhancement and fluorescence emission quenching. Further, NHBH exhibited good selectivity for Fe³⁺ and Na ⁺ ions in the presence of mostother metal ions. Job's plot analysis authenticated the 1:1 binding nature of NHBH with Fe³⁺ and Na ⁺ ions. Further, DFT studies validated the formation of probe (NHBH), fluorophore-quencher (Fe-NHBH) complex formation.

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萘-2-酰基- n ' -（2-羟基苯甲酰）苯并肼酯作为双金属离子化学传感器检测Fe3+和Na+离子

制备了新型探针萘-2-酰基- n′-（2-羟基苯甲酰）苯并肼酯（nhhh）化学传感器，并采用红外光谱、核磁共振、13C核磁共振和质谱技术对其进行了表征。在1:4甲醇水介质中，采用吸收和发射滴定法研究了探针（nhhb）对12种不同金属氯盐（Al3+、Ca2+、Co2+、Cr3+、Fe3+、Cu2+、Mn2+、Ni2+、Zn2+、Hg2+、K+和Na+）的阳离子感应能力。结果表明，探针对Fe3+和Na +离子表现出吸收增强和荧光猝灭的特性。此外，在大多数其他金属离子存在的情况下，NHBH对Fe3+和Na +离子表现出良好的选择性。Job的plot分析证实了NHBH与Fe3+和Na +离子的1:1结合性质。进一步，DFT研究验证了探针（NHBH）的形成，荧光团-猝灭剂（Fe-NHBH）络合物的形成。

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Chemistry of Inorganic Materials

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