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A colorimetric sensor for pH utilizing a quinoline derivative

文献类型： 外文期刊

作者： Wang, Qingping 1 ; Li, Rongjie 1 ; Qiu, Suyan 2 ; Lin, Zhenyu 2 ; Chen, Guonan 2 ; Luo, Linguang 3 ;

作者机构： 1.Fujian Normal Univ, Coll Environm Sci & Engn, Fuzhou 350007, Fujian, Peoples R China

2.Fuzhou Univ, MOE Key Lab Anal & Detect Food Safety, Fujian Prov Key Lab Anal & Detect Technol Food Sa, Inst Nanomed & Nanobiosensing,Dept Chem, Fuzhou 350108, Fujian, Peoples R China

3.Jiangxi Acad Agr Sci, Inst Qual & Safety & Stand Agr Prod Res, Nanchang 330200, Jiangxi, Peoples R China

期刊名称：ANALYTICAL METHODS （ 影响因子：2.896； 五年影响因子：2.716 ）

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收录情况： SCI

摘要： A simple sensor utilizing a simple aminoquinoline derivative (5-(quinolin-8-yliminol) pentanal, QYP) has been successfully developed for the naked-eye colorimetric assay of pH. The QYP compound presents strong solvatochromism due to the solute-solvent interaction, and it is sensitive to a pH change in the solution. The color of the solution changes from orange to colorless upon increasing the pH value, which is well consistent with the corresponding UV/vis absorbance variation. UV absorbance has a direct linear relationship with the pH values in the range of 4.0 to 8.0 in phosphate-buffered saline, and the corresponding color variation could be distinguished readily by the naked eye.

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