CAJ | 학술논문

以3-甲酰基-N-丁基咔唑和4-苯基-3-硫代氨基脲为反应原料,合成了一种基于咔唑的席夫碱衍生物 L(3-甲酰基-N-丁基咔唑缩4-苯基-3-硫代氨基脲席夫碱),用 IR、1 H NMR 及元素分析对其结构进行了表征。通过紫外-可见光谱、荧光光谱及1 H NMR 谱研究了 L 对 Hg2＋的选择性识别性能。实验结果表明,L与 Hg2＋能够以2∶1的化学计量比形成配合物,结合常数为7．6×104 L/mol,且 L 对 Hg2＋有很好的选择性,受常见离子的干扰较小。
이3-갑선기-N-정기잡서화4-분기-3-류대안기뇨위반응원료,합성료일충기우잡서적석부감연생물 L(3-갑선기-N-정기잡서축4-분기-3-류대안기뇨석부감),용 IR、1 H NMR 급원소분석대기결구진행료표정。통과자외-가견광보、형광광보급1 H NMR 보연구료 L 대 Hg2＋적선택성식별성능。실험결과표명,L여 Hg2＋능구이2∶1적화학계량비형성배합물,결합상수위7．6×104 L/mol,차 L 대 Hg2＋유흔호적선택성,수상견리자적간우교소。
A new 4-Phenyl-3-thiosemicarbazide-based Schiff-base (L)was synthesized.Its structure was charac-terized by using IR,1 H NMR and elemental analysis.The influences of a number of different metal ions on its UV-Vis absorption and fluorescence spectral were studied in acetonitrile.Spectroscopic studies revealed that L could detect Hg2 + by UV-Vis absorption and fluorescence spectrophotometry.The stoichiometry ratio of L-Hg2 + was 2∶1,respectively.The analysis suggested that L could behave as a fluorescent sensor for the selec-tive detection of Hg2 + and the binding constant was 7.6 × 10 4 L/mol.