Selective fluorometric determination of microcystin-LR using a segment template molecularly imprinted by polymer-capped carbon quantum dots

Qi, Zhenke; Lu, Ruiqin; Wang, Shiyu; Xiang, Cheng; Xie, Chuangjie; Zheng, Manni; Tian, Xin; Xu, Xiaoyan

doi:10.1016/j.microc.2020.105798

Cited by 32 publications

(10 citation statements)

References 52 publications

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“…The obtained sensor presented a linear response of 1 to 1000 μg L –1 and a limit of detection (LOD) of 0.0093 μg L –1 of MC-LR. These novel materials were sensitive to MC-LR detection by fluorescence …”

Section: Molecularly Imprinted Polymers In Mcs Analysismentioning

confidence: 99%

“…These novel materials were sensitive to MC-LR detection by fluorescence. 73 MIPs in conjunction with the Fabry−Peŕot interferometer have also been used to detect MC-LR in water. 192 Queiroś et al reported the synthesis of a Fabry−Peŕot sensor probe based on a fiber optic tip coated with a selective thin film of MC-LR.…”

Section: ■ Molecularly Imprinted Polymersmentioning

confidence: 99%

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Microcystins Detection Methods: A Focus on Recent Advances Using Molecularly Imprinted Polymers

et al. 2021

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Section: Molecularly Imprinted Polymers In Mcs Analysismentioning

confidence: 99%

Section: ■ Molecularly Imprinted Polymersmentioning

confidence: 99%

Microcystins Detection Methods: A Focus on Recent Advances Using Molecularly Imprinted Polymers

et al. 2021

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“…They used nonagrochemical trialkylmelamines as template molecules in place of atrazine, thus avoiding the troubles caused by analyte contaminants [ 30 ]. The authors proposed a fragment template docking molecular imprinting strategy for Microcystin-LR detection using L-leucine as the dummy template molecule [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Molecularly Imprinted Ratiometric Fluorescence Sensor for Ciguatoxin P-CTX-3C Detection in Fish

Xiang

Tian

et al. 2022

Foods

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Ciguatoxin (CTX) detection methods are essential due to the serious hazard that bioaccumulation in fish and transmission along the food chain poses to human health. We report the rapid and simple development of a dual-emitting, molecularly imprinted, ratiometric fluorescence sensor (MIPs@BCDs/RCDs@SiO2) to detect ciguatoxin P-CTX-3C with high sensitivity and selectivity. The sensor was fabricated via sol–gel polymerization using monensin as the fragmentary dummy template molecule, blue carbon dots (BCDs) as the response signal, and red carbon dots (RCDs) as the reference signal. The fluorescence emission of BCDs was selectively quenched in the presence of P-CTX-3C, leading to a favorable linear correlation between the fluorescence intensity ratio (I440/I675) and the P-CTX-3C concentration in the range of 0.001–1 ng/mL with a lower detection limit of 3.3 × 10−4 ng/mL. According to LC-MS measurement results, the proposed sensor can rapidly detect ciguatoxin P-CTX-3C in coral reef fish samples with satisfactory recoveries and standard deviations. This study provides a promising strategy for rapid trace analysis of marine toxins and other macromolecular pollutants in complex matrices.

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“…For instance, there is no need for toxic solvents, expensive equipment, sophisticated sample preparation, and expert operators. 30,31 In spite of the vast effort, there is still a lack of accurate fluorometric sensors for many essential drugs. cence sensors have higher response stability and have been used widely for the detection of various drugs.…”

Section: Introductionmentioning

confidence: 99%

“…The fluorometric sensors based on CQDs have numerous advantages compared to the conventional detection methods such as Raman spectroscopy, electrophoresis, high-performance liquid chromatography (HPLC), and mass spectrometry. For instance, there is no need for toxic solvents, expensive equipment, sophisticated sample preparation, and expert operators. , In spite of the vast effort, there is still a lack of accurate fluorometric sensors for many essential drugs.…”

Section: Introductionmentioning

confidence: 99%

Intrinsic Dual-Emitting Carbon Quantum-Dot-Based Selective Ratiometric Fluorescent Mercaptopurine Detection

Saboorizadeh

Zare‐Dorabei

2022

ACS Biomater. Sci. Eng.

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, an immunosuppressive drug, has been widely prescribed for treating leukemia and autoimmune diseases. The level of the 6-MP drug in body fluids is of great interest due to the severe health problems related to its overdose. This study used a facile microwave preparation route to synthesize carbon quantum dots (CQDs) using glutathione and formamide as carbon sources. The obtained monodispersed quantum dots showed dual fluorescence emission with a sensitive affinity toward the 6-MP drug. The sensor's response was optimized by tuning the temperature, pH, and volume ratio of the probe. The prepared ratiometric fluorescence method showed accurate measurements for determining mercaptopurine in aqueous solutions in the concentration range of 1.4−7.6 mg L −1 with the limit of detection of 1.3 mg L −1 . The sensor's performance was assessed in complex solutions, human urine, and human plasma sample and recovery values in the range of 88− 127% were obtained. The reliable dual fluorometric sensor showed promising results for 6-MP determination and potential application for the determination of other chemical and biochemical species.

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Selective fluorometric determination of microcystin-LR using a segment template molecularly imprinted by polymer-capped carbon quantum dots

Cited by 32 publications

References 52 publications

Microcystins Detection Methods: A Focus on Recent Advances Using Molecularly Imprinted Polymers

Microcystins Detection Methods: A Focus on Recent Advances Using Molecularly Imprinted Polymers

Facile Synthesis of Molecularly Imprinted Ratiometric Fluorescence Sensor for Ciguatoxin P-CTX-3C Detection in Fish

Intrinsic Dual-Emitting Carbon Quantum-Dot-Based Selective Ratiometric Fluorescent Mercaptopurine Detection

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