Facile preparation of polymer dots for tetracycline and Al3+ detection and exploration of anti-counterfeiting applications via the fluorescence “ON–OFF-ON” strategy

IF 5.3 2区化学 Q1 CHEMISTRY, ANALYTICAL Microchimica Acta Pub Date : 2025-03-17 DOI:10.1007/s00604-025-07093-1

Zhonghao Li, Zherui Wan, Xiaoxu Cui, Qi Chen, Yue Hua, Guang Yang

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Abstract

Polymer dots (PT-PDs) were obtained through a “synthesis-modification integration” method by using polyethyleneimine (PEI) and tartaric acid (TA) as raw materials. The designed PT-PDs displayed a nanoscale structure with an average size of 1.6 nm, and bright blue fluorescence (FL) emission with a fluorescence quantum yield (QY) of 14.3%. Moreover, the PT-PDs were used as a sensing platform for the sensitive and quantitative detection of tetracyclines (TCs) and Al³⁺ via fluorescence quenching and recovery. The LODs for tetracycline hydrochloride (TCH), doxycycline (DOX), and Al³⁺ were 94.8 nM, 76.7 nM, and 177.8 nM, respectively. In addition, PT-PDs incorporated with polyacrylamide were used for the recognition of TCs and Al³⁺ in a portable manner on the basis of the fluorescence “ON–OFF-ON” strategy, which revealed great application in the field of anti-counterfeiting and encryption.

Graphical Abstract

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利用荧光“ON-OFF-ON”策略制备用于四环素和Al3+检测的聚合物点并探索其防伪应用

以聚乙烯亚胺（PEI）和酒石酸（TA）为原料，采用“合成-改性一体化”法制备了聚合物点（pt - pd）。所设计的pt - pd具有纳米级结构，平均尺寸为1.6 nm，荧光量子产率为14.3%，具有亮蓝色荧光（FL）发射。此外，pt - pd被用作敏感和定量检测四环素（TCs）和Al3+的荧光猝灭和恢复的传感平台。盐酸四环素（TCH）、强力霉素（DOX）和Al3+的检出限（lod）分别为94.8 nM、76.7 nM和177.8 nM。此外，将聚丙烯酰胺掺杂的pt - pd基于荧光“on - off - on”策略，用于便携式识别tc和Al3+，在防伪和加密领域显示出巨大的应用前景。图形抽象

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文献相关原料

公司名称

产品信息

阿拉丁

amino acids

阿拉丁

inorganic salts

阿拉丁

N, N-methylenebisacrylamide

阿拉丁

acrylamide

阿拉丁

tartaric acid

阿拉丁

polyethyleneimine (PEI)

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.