A cotton swab platform for fluorescent detection of aluminum ion in food samples based on aggregation-induced emission of carbon dots

IF 5.3 2区化学 Q1 CHEMISTRY, ANALYTICAL

Microchimica Acta Pub Date : 2024-10-30 DOI:10.1007/s00604-024-06799-y

Tong Shao, Dou Yang, Xiaoshuang Wang, Ruirui Wang, Qiaoli Yue

{"title":"A cotton swab platform for fluorescent detection of aluminum ion in food samples based on aggregation-induced emission of carbon dots","authors":"Tong Shao, Dou Yang, Xiaoshuang Wang, Ruirui Wang, Qiaoli Yue","doi":"10.1007/s00604-024-06799-y","DOIUrl":null,"url":null,"abstract":"<div><p>A novel portable cotton swab based on nitrogen-doped carbon dots (NCDs) for Al<sup>3+</sup> detection was constructed for the first time. NCDs with bright green fluorescence were prepared by hydrothermal method with phenylhydrazine hydrochloride and 3-hydroxy-2-naphthoic acid hydrazide as precursors. The surface of NCDs was exposed to abundant functional groups (such as amino, carboxyl, hydroxyl, etc.), which was helpful for the formation of complexes between NCDs and Al<sup>3+</sup>. In the presence of Al<sup>3+</sup>, the aggregation of NCDs obviously induced their fluorescence enhancement due to the aggregation-induced emission (AIE) of NCDs. Furthermore, the quantum yield (QY) of NCDs was enhanced by 12 times with Al<sup>3+</sup>, and the fluorescence lifetime was increased by 7.54 ns. The fluorescence intensity was linearly correlated with the concentration of Al<sup>3+</sup> (2.5–300 μM), and the limit of detection was 0.76 μM. Moreover, for the portable way, cotton swabs were successfully employed to construct the sensors for the detection of Al<sup>3+</sup> in food samples. This proposal has potential for the application in food analysis.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"191 11","pages":""},"PeriodicalIF":5.3000,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Microchimica Acta","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s00604-024-06799-y","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}

引用次数: 0

Abstract

A novel portable cotton swab based on nitrogen-doped carbon dots (NCDs) for Al³⁺ detection was constructed for the first time. NCDs with bright green fluorescence were prepared by hydrothermal method with phenylhydrazine hydrochloride and 3-hydroxy-2-naphthoic acid hydrazide as precursors. The surface of NCDs was exposed to abundant functional groups (such as amino, carboxyl, hydroxyl, etc.), which was helpful for the formation of complexes between NCDs and Al³⁺. In the presence of Al³⁺, the aggregation of NCDs obviously induced their fluorescence enhancement due to the aggregation-induced emission (AIE) of NCDs. Furthermore, the quantum yield (QY) of NCDs was enhanced by 12 times with Al³⁺, and the fluorescence lifetime was increased by 7.54 ns. The fluorescence intensity was linearly correlated with the concentration of Al³⁺ (2.5–300 μM), and the limit of detection was 0.76 μM. Moreover, for the portable way, cotton swabs were successfully employed to construct the sensors for the detection of Al³⁺ in food samples. This proposal has potential for the application in food analysis.

Graphical Abstract

查看原文本刊更多论文

基于碳点聚集诱导发射的食品样品铝离子荧光检测棉签平台

首次构建了一种基于掺氮碳点（NCDs）的新型便携式棉签，用于检测 Al3+。以盐酸苯肼和 3-hydroxy-2-naphthoic acid hydrazide 为前驱体，通过水热法制备了具有明亮绿色荧光的 NCDs。NCD 表面暴露有丰富的官能团（如氨基、羧基、羟基等），有利于 NCD 与 Al3+ 形成络合物。在 Al3+ 的存在下，由于 NCDs 的聚集诱导发射（AIE），NCDs 的聚集明显诱导其荧光增强。此外，在 Al3+ 的作用下，NCDs 的量子产率（QY）提高了 12 倍，荧光寿命延长了 7.54 ns。荧光强度与 Al3+ 的浓度（2.5-300 μM）呈线性相关，检测限为 0.76 μM。此外，在便携式方法中，成功地利用棉签构建了检测食品样品中 Al3+ 的传感器。该建议具有在食品分析中应用的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Microchimica Acta 化学-分析化学

CiteScore

9.80

自引率

5.30%

发文量

410

审稿时长

2.7 months

期刊介绍： As a peer-reviewed journal for analytical sciences and technologies on the micro- and nanoscale, Microchimica Acta has established itself as a premier forum for truly novel approaches in chemical and biochemical analysis. Coverage includes methods and devices that provide expedient solutions to the most contemporary demands in this area. Examples are point-of-care technologies, wearable (bio)sensors, in-vivo-monitoring, micro/nanomotors and materials based on synthetic biology as well as biomedical imaging and targeting.