{"title":"Rapid Colorimetric Detection of Ca(II) Based on Surface Plasmon Resonance Absorbances of 5-PBA@AuNPs Sensor","authors":"Jingyi Ma, Guona Li, Xueqi Duan, Jin-Peng Xue, Xing Li, Yun Li","doi":"10.1002/cnma.202400305","DOIUrl":null,"url":null,"abstract":"<p>Calcium ions (Ca<sup>2+</sup>) are essential for a myriad of physiological functions, including excitability, neurotransmitter release, gene transcription, cell proliferation, synaptic plasticity, and hormone secretion. Consequently, the detection of Ca<sup>2+</sup> concentrations in water is of fundamental and practical significance. In this study, a novel method for the simple, visual, and rapid colorimetric detection of Ca<sup>2+</sup> is introduced, leveraging the surface plasmon resonance (SPR) absorbances of gold nanoparticles (AuNPs) modified with 5-Pyrimidinylboronic acid (5-PBA). A color change from wine-red to gray-blue was observed with increasing concentrations of Ca<sup>2+</sup>, indicative of the agglomeration of AuNPs. This agglomeration displayed favorable anti-interference properties and selectivity. The limits of detection (LOD) were determined to be 0.08 mM by the unaided eye and 3.29 μM by UV-visible spectroscopy. Moreover, an excellent linear relationship (<i>R</i><sup>2</sup>=0.9879) was maintained within the Ca<sup>2+</sup> concentration range of 0.0 to 0.5 mM. These results suggest that AuNPs modified with 5-PBA are suitable for the quantitative determination of Ca<sup>2+</sup>. Subsequent testing on actual samples confirmed that this new method could be effectively applied to the monitoring of Ca<sup>2+</sup> in water.</p>","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":null,"pages":null},"PeriodicalIF":2.6000,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ChemNanoMat","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/cnma.202400305","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Calcium ions (Ca2+) are essential for a myriad of physiological functions, including excitability, neurotransmitter release, gene transcription, cell proliferation, synaptic plasticity, and hormone secretion. Consequently, the detection of Ca2+ concentrations in water is of fundamental and practical significance. In this study, a novel method for the simple, visual, and rapid colorimetric detection of Ca2+ is introduced, leveraging the surface plasmon resonance (SPR) absorbances of gold nanoparticles (AuNPs) modified with 5-Pyrimidinylboronic acid (5-PBA). A color change from wine-red to gray-blue was observed with increasing concentrations of Ca2+, indicative of the agglomeration of AuNPs. This agglomeration displayed favorable anti-interference properties and selectivity. The limits of detection (LOD) were determined to be 0.08 mM by the unaided eye and 3.29 μM by UV-visible spectroscopy. Moreover, an excellent linear relationship (R2=0.9879) was maintained within the Ca2+ concentration range of 0.0 to 0.5 mM. These results suggest that AuNPs modified with 5-PBA are suitable for the quantitative determination of Ca2+. Subsequent testing on actual samples confirmed that this new method could be effectively applied to the monitoring of Ca2+ in water.
ChemNanoMatEnergy-Energy Engineering and Power Technology
CiteScore
6.10
自引率
2.60%
发文量
236
期刊介绍:
ChemNanoMat is a new journal published in close cooperation with the teams of Angewandte Chemie and Advanced Materials, and is the new sister journal to Chemistry—An Asian Journal.