Molecularly imprinted polymers coated on multi-walled carbon nanotubes through a simple indirect method for the determination of 2,4-dichlorophenoxyacetic acid in environmental water

Yang, Weijie; Jiao, Feipeng; Zhou, Lei; Chen, Xiaoqing; Jiang, Xinyu

doi:10.1016/j.apsusc.2013.07.157

Cited by 60 publications

(17 citation statements)

References 35 publications

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“…It can be seen that the reported MIPs coupled with HPLC methods often involve complicated sample treatment process and require long analysis time Yang et al, 2013;Zhong et al, 2014;Zhou et al, 2015). Yu's group has reported a kind of paper-based MIPs for chemiluminescence detection of 2,4-D at the concentration of femtomolar level and the response time is only 4 min.…”

Section: Methods Performance Comparisonmentioning

confidence: 99%

“…However, they often require extensive sample preparation and separation procedures, owing to the complexity of the sample matrices and the low content of 2,4-D. Also, they are still involved in some problems such as complicated instruments, high cost, time-consuming process, and particularly low selectivity. Therefore, molecularly imprinted polymers (MIPs) with desired selectivity, physical robustness, thermal stability, as well as low cost and easy preparation (Li et al, Contents lists available at ScienceDirect 2011), are gaining popularity in sample pretreatment Liu et al, 2014;Omidi et al, 2014;Yang et al, 2013;Zhong et al, 2014;Zhou et al, 2015) and sensors (Anirudhan and Alexander, 2014;Guan et al, 2011;Wang et al, 2013Wang et al, , 2015 for determination of trace 2,4-D in complex matrices.…”

Section: Introductionmentioning

confidence: 99%

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A molecular imprinting-based turn-on Ratiometric fluorescence sensor for highly selective and sensitive detection of 2,4-dichlorophenoxyacetic acid (2,4-D)

Wang

et al. 2016

Biosensors and Bioelectronics

166

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a b s t r a c tA novel molecular imprinting-based turn-on ratiometric fluorescence sensor was constructed via a facile sol-gel polymerization for detection of 2,4-dichlorophenoxyacetic acid (2,4-D) on the basis of photoinduced electron transfer (PET) by using nitrobenzoxadiazole (NBD) as detection signal source and quantum dots (QDs) as reference signal source. With the presence and increase of 2,4-D, the amine groups on the surface of QDs@SiO 2 could bind with 2,4-D and thereby the NBD fluorescence intensities could be significantly enhanced since the PET process was inhibited, while the QDs maintained constant intensities. Accordingly, the ratio of the dual-emission intensities of green NBD and red QDs could be utilized for turn-on fluorescent detection of 2,4-D, along with continuous color changes from orange-red to green readily observed by the naked eye. The as-prepared fluorescence sensor obtained high sensitivity with a low detection limit of 0.14 μM within 5 min, and distinguished recognition selectivity for 2,4-D over its analogs. Moreover, the sensor was successfully applied to determine 2,4-D in real water samples, and high recoveries at three spiking levels of 2,4-D ranged from 95.0% to 110.1% with precisions below 4.5%. The simple, rapid and reliable visual sensing strategy would not only provide potential applications for high selective ultratrace analysis of complicated matrices, but also greatly enrich the research connotations of molecularly imprinted sensors.

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Section: Methods Performance Comparisonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A molecular imprinting-based turn-on Ratiometric fluorescence sensor for highly selective and sensitive detection of 2,4-dichlorophenoxyacetic acid (2,4-D)

Wang

et al. 2016

Biosensors and Bioelectronics

166

View full text Add to dashboard Cite

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“…Molecular imprinting is a powerful technique for creating specific binding sites in molecularly imprinted polymers (MIPs) [1][2][3][4]. MIPs are obtained by the polymerization of functional monomers using a cross-linker around a template.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and application of core–shell magnetic molecularly imprinted polymers for selective recognition of clozapine from human serum

2015

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In this article, a magnetic molecularly imprinted polymer (MMIPs) based on Fe 3 O 4 @SiO 2 has been synthesized for simply extraction of clozapine (CLZ) from human serum. The MIPs were coated on the Fe 3 O 4 @SiO 2 -NH 2 surface by the copolymerization of methacrylic acid with ethylene glycol dimethacrylate; and clozapine as template molecule. The properties of obtained Fe 3 O 4 @SiO 2 -MIPs were characterized by fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, scanning electron microscopy, dynamic light scattering, energy dispersive X-ray analysis (EDX), vibration sample magnetometer and rebinding experiments. The Fe 3 O 4 @SiO 2 -MIPs showed a highly improved imprinting capacity, a fast adsorption equilibrium, and significant selectivity in molecularly imprinted solid-phase extraction of CLZ from human serum. In addition, MMIPs were regenerated and their adsorption capacity in the eighth use was about 6.67% loss in clozapine solution. Also, the intra and inter-day precision values were 2 less than 6 and 4%, respectively. These results suggest Fe 3 O 4 @SiO 2 -MIPs may be used for selective extraction and analysis of CLZ in human serum.

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“…Then MMIP (or MNIP) was separated by an external magnetic field and the supernatant was analyzed by UV-vis at 617 nm. The dynamics method was the same as adsorption isotherm method, except for different times (20,40, 60, 90, 120, 150, 180 and 240 min) at a constant concentration (200 μM).…”

Section: Adsorption Studiesmentioning

confidence: 99%

“…This can be done by solidphase extraction (SPE) with molecularly imprinted polymer (MIP). MIP is artificial polymer with a predetermined selectivity for target molecule which is formed in the presence of target molecules and removed by proper solvents [20,21]. Owing to the chemical, mechanical, thermal stability and high selectivity for the template molecules, MIP as selective solid-phase adsorbent for MG extraction has been used in recent years [7][8][9][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Determination of malachite green in fish based on magnetic molecularly imprinted polymer extraction followed by electrochemiluminescence

Huang

Zhou

Chen

et al. 2015

Talanta

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Molecularly imprinted polymers coated on multi-walled carbon nanotubes through a simple indirect method for the determination of 2,4-dichlorophenoxyacetic acid in environmental water

Cited by 60 publications

References 35 publications

A molecular imprinting-based turn-on Ratiometric fluorescence sensor for highly selective and sensitive detection of 2,4-dichlorophenoxyacetic acid (2,4-D)

A molecular imprinting-based turn-on Ratiometric fluorescence sensor for highly selective and sensitive detection of 2,4-dichlorophenoxyacetic acid (2,4-D)

Synthesis, characterization and application of core–shell magnetic molecularly imprinted polymers for selective recognition of clozapine from human serum

Determination of malachite green in fish based on magnetic molecularly imprinted polymer extraction followed by electrochemiluminescence

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