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Colorimetric dual sensor for Cu(II) and tyrosine and its application as paper strips for detection in water and human saliva as real samples.
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy ( IF 4.3 ) Pub Date : 2020-01-10 , DOI: 10.1016/j.saa.2020.118052 Gaurav Vyas 1 , Shreya Bhatt 1 , Mrinal K Si 1 , Sana Jindani 1 , Eringathodi Suresh 1 , Bishwajit Ganguly 1 , Parimal Paul 1
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy ( IF 4.3 ) Pub Date : 2020-01-10 , DOI: 10.1016/j.saa.2020.118052 Gaurav Vyas 1 , Shreya Bhatt 1 , Mrinal K Si 1 , Sana Jindani 1 , Eringathodi Suresh 1 , Bishwajit Ganguly 1 , Parimal Paul 1
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A calix[4]arene based compound incorporating amide and morpholine moieties has been synthesized and its ion recognition property towards metal ions and application of its metal complex towards sensing of amino acids has been investigated. The synthesized compound interacts with Cu2+ with high selectivity and sensitivity (LOD, 0.1 ppb) in aqueous media with instant color change from colorless to yellow without interference from any other metal ions used in this study. The molecular structure of the calix compound (1) has been determined by single crystal X-ray study and the structure of its Cu2+ complex has been established by DFT calculation. The Cu2+ complex of 1 selectively detects tyrosine (LOD, 1.2 ppm) in water with distinct color change and without any interference from other 22 amino acids used in this study. The mechanism for detection of tyrosine with color change is also presented. For easy field application, paper based sensor strips have been prepared by coating compound 1 and its Cu2+ complex on filter paper, which have been used for semi-quantitative measurement of Cu2+ and tyrosine. Compound 1 and its Cu2+ complex have also been used for detection of Cu2+ and tyrosine, respectively in water and human saliva as real samples and satisfactory results are obtained.
中文翻译：
比色法用于铜（II）和酪氨酸的双传感器及其在纸条中的应用，可作为真实样品在水和人唾液中检测。
已经合成了结合有酰胺和吗啉部分的杯[4]芳烃基化合物，并且研究了其对金属离子的离子识别特性以及其金属络合物在氨基酸感测中的应用。合成的化合物在水性介质中以高选择性和灵敏度（LOD，0.1 ppb）与Cu2 +相互作用，立即从无色变为黄色，而不受本研究中使用的任何其他金属离子的干扰。通过单晶X射线研究确定了杯状化合物（1）的分子结构，并通过DFT计算确定了其Cu 2+络合物的结构。1的Cu2 +络合物选择性地检测水中的酪氨酸（LOD，1.2 ppm），具有明显的颜色变化，并且不受本研究中使用的其他22种氨基酸的干扰。还介绍了检测酪氨酸颜色变化的机理。为了便于现场应用，已经通过将化合物1及其化合物Cu2 +复合物涂覆在滤纸上来制备纸基传感器条，这些纸已用于半定量测量Cu2 +和酪氨酸。化合物1及其Cu2 +络合物也已被分别用于检测水和人唾液中的Cu2 +和酪氨酸作为真实样品，并获得了满意的结果。
更新日期：2020-01-11
中文翻译：
比色法用于铜（II）和酪氨酸的双传感器及其在纸条中的应用，可作为真实样品在水和人唾液中检测。
已经合成了结合有酰胺和吗啉部分的杯[4]芳烃基化合物，并且研究了其对金属离子的离子识别特性以及其金属络合物在氨基酸感测中的应用。合成的化合物在水性介质中以高选择性和灵敏度（LOD，0.1 ppb）与Cu2 +相互作用，立即从无色变为黄色，而不受本研究中使用的任何其他金属离子的干扰。通过单晶X射线研究确定了杯状化合物（1）的分子结构，并通过DFT计算确定了其Cu 2+络合物的结构。1的Cu2 +络合物选择性地检测水中的酪氨酸（LOD，1.2 ppm），具有明显的颜色变化，并且不受本研究中使用的其他22种氨基酸的干扰。还介绍了检测酪氨酸颜色变化的机理。为了便于现场应用，已经通过将化合物1及其化合物Cu2 +复合物涂覆在滤纸上来制备纸基传感器条，这些纸已用于半定量测量Cu2 +和酪氨酸。化合物1及其Cu2 +络合物也已被分别用于检测水和人唾液中的Cu2 +和酪氨酸作为真实样品，并获得了满意的结果。
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