Lanthanide and functionalization-free dual-state emitting zinc-based MOFs followed by dual-state detection: ratiometric and color-tonality visual detection of tetracycline in solution and on paper in food and environmental samples

IF 5.3 2区化学 Q1 CHEMISTRY, ANALYTICAL

Microchimica Acta Pub Date : 2024-12-21 DOI:10.1007/s00604-024-06896-y

Sameera Sh. Mohammed Ameen, Khalid M. Omer

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Abstract

An efficient dual-state blue-emitting zinc-based metal–organic frameworks (MOFs), designated as UoZ-8 has been developed. Coordination-induced emission causes the UoZ-8 to give the blue emission in both solid and dispersed form in liquid. Upon the addition of tetracycline (TC), a noticeable shift from blue emission to greenish-yellow emission occurred, with a marked increase in intensity, which was attributed to the inner filter effect accompanied by aggregation-induced emission (IFE-AIE). Consequently, ratiometric-based fluorometry (in solution) and color tonality visual detection platform (on paper) were developed, exploiting the dual-state property of UoZ-8 alone and UoZ-8:TC. The detection limit using the ratiometric-based fluorescence method was 3.8 nM, while on paper it was 3.5 µM. Paper-based visual mode was used for the detection of TC in tap and river water samples showing satisfactory accuracy and precision.

Graphical Abstract

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一种高效的双态蓝色发光锌基金属有机框架（MOFs）被开发出来，命名为 UoZ-8。配位诱导发射使 UoZ-8 在固态和分散在液体中时都能发出蓝光。加入四环素（TC）后，蓝色发射明显转变为黄绿色发射，且强度显著增加，这归因于伴随聚集诱导发射（IFE-AIE）的内滤效应。因此，利用 UoZ-8 本身和 UoZ-8:TC 的双态特性，开发了基于比率测定法的荧光测定法（溶液中）和色调视觉检测平台（纸上）。使用比率荧光法的检测限为 3.8 nM，而在纸上的检测限为 3.5 µM。采用纸上目测模式检测自来水和河水样品中的 TC，准确度和精密度令人满意。

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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.