Label-free colorimetric detection of trace cholesterol based on molecularly imprinted photonic hydrogels

Li, Jinhua; Zhang, Zhong; Xu, Shoufang; Chen, Lingxin; Zhou, Na; Xiong, Hua; Peng, Hailong

doi:10.1039/c1jm14230e

Cited by 119 publications

(66 citation statements)

References 41 publications

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“…Binding sites with molecular recognition properties are formed after template molecules have been removed from the polymerized material, leaving behind cavities for the subsequent rebinding process that are complementary in size and shape to the template molecules [1][2][3]. In the past few decades, MIPs have aroused extensive attentions and been widely applied in many fields, such as solid-phase extraction (SPE) [4,5] and chemical sensors [6,7], owing to their desired selectivity, physical robustness, thermal stability, as well as low cost and easy preparation. Up to date, most of organic molecules [8,9], inorganic metal ions [10][11][12] and biological macromolecules [13,14] have been used as templates to prepare MIPs.…”

Section: Introductionmentioning

confidence: 99%

Novel Hg2+-imprinted polymers based on thymine–Hg2+–thymine interaction for highly selective preconcentration of Hg2+ in water samples

Chen

et al. 2012

Journal of Hazardous Materials

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133

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Section: Introductionmentioning

confidence: 99%

Novel Hg2+-imprinted polymers based on thymine–Hg2+–thymine interaction for highly selective preconcentration of Hg2+ in water samples

Chen

et al. 2012

Journal of Hazardous Materials

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133

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“…In recent years, MIPs proved to be useful materials in several areas of analytical chemistry [5,[16][17][18][19][20]. MIPs are synthetic materials with artificially-generated recognition sites able to specifically rebind a target molecule in preference to other closely-related compounds.…”

Section: Molecularly-imprinted Polymersmentioning

confidence: 99%

Recent advances in solid-phase sorbents for sample preparation prior to chromatographic analysis

Wen

Chen

et al. 2014

TrAC Trends in Analytical Chemistry

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342

123

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A B S T R A C TSample preparation is a crucial bottleneck in the whole analytical process. Solid-phase sorbents (SPSs) have aroused increasing interest in research on sample preparation, as they have key roles in obtaining high clean-up and enrichment efficiency in the analysis of trace targets present in complex matrices. The objective of this review is to provide a broad overview of the recent advances and applications of SPSs in sample preparation prior to chromatographic analysis, during the period 2008-13. We include SPSs, such as molecularly-imprinted polymers, carbon nanomaterials, metallic nanoparticles and metal organic frameworks, focusing on solid-phase extraction, solid-phase microextraction, matrix solid-phase dispersion and stir-bar sorptive extraction of typical pollutants in environmental, biological, food and pharmaceutical samples. We propose remaining challenges and future perspectives to improve development of new SPSs and to apply them further.

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“…Meanwhile, another attractive material, molecularly imprinted polymers (MIPs) with high stability, ease of preparation and low cost have flourished in recent decades, particularly displaying promising application potentials in chemo/biosensors [9][10][11]. Among them, surface MIPs (SMIPs) with core-shell hybrid structure have many advantages over the traditional MIPs, such as more complete removal and more easily rebinding of templates, more accessible recognition sites, and better-defined material morphologies [12].…”

Section: Introductionmentioning

confidence: 99%

Molecularly imprinted polymers-coated gold nanoclusters for fluorescent detection of bisphenol A

Zhong

et al. 2015

Sensors and Actuators B: Chemical

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117

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a b s t r a c tA flexible fluorescent sensing strategy for the recognition and detection of bisphenol A (BPA) has been proposed based on molecularly imprinted polymers (MIPs)-coated gold nanoclusters (AuNCs), by taking advantages of the high selectivity of MIPs and the strong fluorescence property of AuNCs. SiO 2 @AuNCs were initially prepared by making use of the powerful amido bonds between carboxyl-terminated AuNCs and amino-functionalized SiO 2 nanoparticles. Then MIPs-coated AuNCs were formed by anchoring MIP layer on the surface of SiO 2 @AuNCs via a sol-gel process. In the presence of imprinting template BPA, a Meisenheimer complex could be formed between BPA and the primary amino groups on the surface of the AuNCs, and the photoluminescent energy of AuNCs would be transferred to the complex, and thereby result in the fluorescence quenching of AuNCs. The fluorescence-quenching fractions of the sensor presented a satisfactory linearity with BPA concentrations over the range of 0-13.1 M and the detection limit could reach 0.10 M. Distinguished selectivity was also exhibited to BPA over other possibly competing molecules. Moreover, the sensor was successfully applied to determine BPA in seawater, and the average recoveries of BPA at three spiking levels ranged from 91.3 to 96.2% with relative standard deviations below 4.8%. This AuNCs-MIPs based sensor provided great potentials for recognition and determination of phenolic environmental estrogens in complicated samples.

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Label-free colorimetric detection of trace cholesterol based on molecularly imprinted photonic hydrogels

Cited by 119 publications

References 41 publications

Novel Hg2+-imprinted polymers based on thymine–Hg2+–thymine interaction for highly selective preconcentration of Hg2+ in water samples

Novel Hg2+-imprinted polymers based on thymine–Hg2+–thymine interaction for highly selective preconcentration of Hg2+ in water samples

Recent advances in solid-phase sorbents for sample preparation prior to chromatographic analysis

Molecularly imprinted polymers-coated gold nanoclusters for fluorescent detection of bisphenol A

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