scholarly journals A Study of the Strength of a Template Molecule—A Functional Monomer Interaction That Affects the Performance of Molecularly Imprinted Polymers and Its Application to Chiral Amplification

2017 ◽  
Vol 65 (4) ◽  
pp. 396-402
Author(s):  
Takuro Yasuyama ◽  
Hirofumi Matsunaga ◽  
Shin Ando ◽  
Tadao Ishizuka
Keyword(s):  
Molecularly Imprinted Polymers ◽  
Template Molecule ◽  
Functional Monomer ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Chiral Amplification

scholarly journals Preparation of Restricted Access Media-Molecularly Imprinted Polymers for the Detection of Chloramphenicol in Bovine Serum

2019 ◽  
Vol 2019 ◽  
pp. 1-12
Author(s):  
Shanwen Zhao ◽  
Chanling Wei ◽  
Zhian Sun ◽  
Huachun Liu ◽  
Yanqiang Zhou ◽  
...  
Keyword(s):  
Molecularly Imprinted Polymers ◽  
Bovine Serum ◽  
Crosslinking Agent ◽  
Template Molecule ◽  
Functional Monomer ◽  
Molecularly Imprinted ◽  
Restricted Access ◽  
Imprinted Polymers ◽  
Relative Standard ◽  
Restricted Access Media

Chloramphenicol- (CAP-) restricted access media-molecularly imprinted polymers (CAP-RAM-MIPs) were prepared by precipitation polymerization using CAP as a template molecule, 2-diethylaminoethyl methacrylate (DEAEM) as a functional monomer, ethylene glycol dimethyl acrylate (EDMA) as a crosslinking agent, glycidyl methacrylate (GMA) as an outer hydrophilic functional monomer, and acetonitrile as a pore former and solvent. The CAP-RAM-MIPs were successfully characterized by Fourier-transform infrared spectroscopy, scanning electron microscopy, and thermogravimetric analysis. The adsorption performance was investigated in detail using static, dynamic, and selective adsorption experiments. Adsorption equilibrium could be reached within 11 min. The CAP-RAM-MIPs had a high adsorption rate and good specific adsorption properties. Scatchard fitting curves indicated there were two binding sites for CAP-RAM-MIPs. Adsorption was Freundlich multilayer adsorption and consistent with the quasi-second kinetic model. Using CAP-RAM-MIPs for selective separation and enrichment CAP in bovine serum in combination with high-performance liquid chromatography (HPLC), CAP recovery ranged from 94.1 to 97.9% with relative standard deviations of 0.7–1.5%. This material has broad application prospects in enrichment and separation.

A Novel Method for Prepairing Higher Performance Picroside I Surface Molecularly Imprinted Polymers for TCM Research

2013 ◽  
Vol 785-786 ◽  
pp. 642-645
Author(s):  
Qing Shan Liu ◽  
Ke Qin Li ◽  
Jun Li ◽  
Xiao Ying Yin ◽  
Tian Hua Yan
Keyword(s):  
Electron Microscope ◽  
Molecularly Imprinted Polymers ◽  
Template Molecule ◽  
Functional Monomer ◽  
Molecular Imprinted Polymers ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Scatchard Equation ◽  
Novel Method ◽  
Scanning Electron

To establish a novel method for preparing molecularly imprinted polymers for Picroside I with better performance on TCM research contrast to previous studies, we have prepared novel surface molecular imprinted polymers (S-MIPs) using Picroside I as the template molecule, Acrylamide (AM) as the functional monomer, and silica gel as the carrier. The morphology of S-MIPs was characterized by scanning electron microscope (SEM) and its static adsorption capacity was measured by the Scatchard equation.

scholarly journals Computer-Aided Design of Molecularly Imprinted Polymers for Simultaneous Detection of Clenbuterol and Its Metabolites

Polymers ◽  
2018 ◽  
Vol 11 (1) ◽  
pp. 17 ◽  
Author(s):  
Bingcheng Zhang ◽  
Xin Fan ◽  
Dayun Zhao
Keyword(s):  
Molecular Imprinting ◽  
Molecularly Imprinted Polymers ◽  
Density Functional ◽  
Simultaneous Detection ◽  
Template Molecule ◽  
Functional Monomer ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Dummy Template ◽  
Computer Aided

Molecular imprinting technology (MIT) offers an effective technique for efficient separation and enrichment of specific analytes from complicated matrices and has been used for illicit veterinary drug detectionin recent years due to its high selectivity, good chemical stability, and simple preparation. The development of in silico-based approaches has enabled the simulation of molecularly imprinted polymers (MIPs) to facilitate the selection of imprinting conditions such as template, functional monomer, and the best suitable solvent. In this work, using density functional theory (DFT), the molecularly imprinted polymers of clenbuterol and its metabolites were designed by computer-aided at B3LYP/6-31 + G (d, p) level. Screening molecular imprinting components such as functional monomers, cross-linkers, and solvents has been achieved in the computational simulation considerations. The simulation results showed that methacrylic acid (MAA) is the best functional monomer; the optimal imprinting ratio for both clenbuterol (CLB) and its dummy template molecule of phenylephrine (PE) to functional monomer is 1:3, while the optimal imprinting ratio for the two dummy template molecules of CLB’s metabolites is 1:5. Choosin gethyleneglycol dimethacrylate (EDGMA) as a crosslinker and aprotic solvents could increase the selectivity of the molecularly imprinted system. Atoms in Molecules (AIM) topology analysis was applied to investigate the template-monomer complexes bonding situation and helped to explain the nature of the reaction in the imprinting process. These theoretical predictions were also verified by the experimental results and found to be in good agreement with the computational results. The computer-simulated imprinting process compensates for the lack of clarity in the mechanism of the molecular imprinting process, and provides an important reference and direction for developing better recognition pattern towards CLB and its metabolite analytes in swine urine samples at the same time.

A Novel Method for Preparing the Surface Molecularly Imprinted Polymers to Target Isolate Ginsenoside Rg1 and its Analogues

2012 ◽  
Vol 535-537 ◽  
pp. 2400-2403 ◽  
Author(s):  
Qing Shan Liu ◽  
Li Na Yi ◽  
Qiu Juan Wang ◽  
Qing Long Guo ◽  
Yi Fan Jiang ◽  
...  
Keyword(s):  
Molecularly Imprinted Polymers ◽  
Template Molecule ◽  
Functional Monomer ◽  
Ginsenoside Rg1 ◽  
Molecular Imprinted Polymers ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Scatchard Equation ◽  
Novel Method ◽  
Scanning Electron

To establish a novel method for preparing molecularly imprinted polymers for ginsenoside Rg1 with better character contrast to previous studies, we have prepared novel surface molecular imprinted polymers (S-MIPs) using ginsenoside Rg1 as the template molecule, Acrylamide (AM) as the functional monomer, and silica gel as the carrier. The morphology of S-MIPs was characterized by scanning electron microscope (SEM) and its static adsorption capacity was measured by the Scatchard equation.

Preparation of water-compatible molecularly imprinted polymers for caffeine with a novel ionic liquid as a functional monomer

2012 ◽  
Vol 127 (4) ◽  
pp. 2884-2890 ◽  
Author(s):  
Xubiao Luo ◽  
Ruizhi Dong ◽  
Shenglian Luo ◽  
Youcai Zhan ◽  
Xinman Tu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Molecularly Imprinted Polymers ◽  
Functional Monomer ◽  
Molecularly Imprinted ◽  
Imprinted Polymers

Practice and Synthetize Molecularly Imprinted Polymers for Seperating Target Neuro-Protective Compounds from TCM with Less Pollution

2014 ◽  
Vol 955-959 ◽  
pp. 239-242
Author(s):  
Ping Geng ◽  
Qing Shan Liu ◽  
Kebaituli Gulibanumu ◽  
Xu Li ◽  
Ke Qin Li ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Molecularly Imprinted Polymers ◽  
Extraction Method ◽  
Template Molecule ◽  
Ginsenoside Rb1 ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Synthetic Materials ◽  
Scatchard Equation ◽  
Environmentally Friendly Method

Molecularly imprinted polymers (MIPs) are synthetic materials that can be the environmental protection extraction method in TCM research and industry. They can overcome the defects of traditional extract methods and environmental pollution. In our research, MIPs were prepared by precipitation polymerization with neuro-protective picroside I and ginsenoside Rb1 as the template molecule. Moreover, the morphology of MIPs was characterized by electron microscope scanning and the static adsorption capacity was measured by the Scatchard equation. Finally, MIPs were made into MIP-SPE columns to enrich the template molecule and its analogues comparing with C18-SPE column and the results show that MIPs have good affinity and selectivity towards the Rb1 and Picroside I in SPE columns. This research may offer a more environmentally friendly method to extract active compounds in the traditional herbal.

scholarly journals Synthesis and characterization of genistein magnetic molecularly imprinted polymers and their application in soy sauce products

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ziqi Xie ◽  
Yunjing Luo ◽  
Zhen Na ◽  
Wei Zhang ◽  
Yufei Zong
Keyword(s):  
Electron Microscopy ◽  
Molecularly Imprinted Polymers ◽  
Solid Phase ◽  
Soy Sauce ◽  
Template Molecule ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Magnetic Molecularly Imprinted Polymers ◽  
Relative Standard ◽  
Surface Molecular Imprinting Technique

AbstractIn this study, a novel method based on genistein magnetic molecularly imprinted polymers (Gen-MMIPs) was developed utilizing a surface molecular imprinting technique, in which genistein was used as the template molecule and Fe3O4 was used as the carrier. The synthesis of Gen-MMIPs was characterized by using scanning electron microscopy (SEM) and transmission electron microscopy (TEM), which indicated that the diameter of the Gen-MMIPs was approximately 500 nm. Via analysis with a vibrating sample magnetometer (VSM), the saturation magnetization of Gen-MMIPs was determined to be 24.79 emu g−1. Fourier transform infrared (FT-IR) spectroscopy showed that polymer groups were on the surface of the magnetic carrier. Adsorption experiments suggested that the genistein adsorption capability of Gen-MMIPs was 5.81 mg g−1, and adsorption equilibrium was achieved within 20 min. Gen-MMIPs as dispersive solid-phase extraction (dSPE) adsorbents combined with HPLC were used to selectively separate genistein in soy sauce samples, and the recoveries ranged from 85.7 to 88.5% with relative standard deviations (RSDs) less than 5%, which proved that this method can be used for the detection of genistein residues in real samples.

scholarly journals Synthesis and Characterization of Genistein Magnetic Molecularly Imprinted Polymers and Its Application in Soy Sauce Products

2021 ◽  
Author(s):  
Ziqi Xie ◽  
Yunjing Luo ◽  
Zhen Na ◽  
Wei Zhang ◽  
Yunfei Zong
Keyword(s):  
Electron Microscopy ◽  
Molecularly Imprinted Polymers ◽  
Solid Phase ◽  
Soy Sauce ◽  
Template Molecule ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Magnetic Molecularly Imprinted Polymers ◽  
Relative Standard ◽  
Surface Molecular Imprinting Technique

Abstract In this study, a novel method based on genistein magnetic molecularly imprinted polymers (Gen-MMIPs) was developed by surface molecular imprinting technique, in which genistein was used as the template molecule and Fe3O4 was used as the carrier. The synthesis of Gen-MMIPs were characterized by using of scanning electron microscopy (SEM) and transmission electron microscopy (TEM), which indicated the diameters of Gen-MMIPs were about 500 nm. Through the technique of vibrating sample magnetometer (VSM), the saturation magnetization of Gen-MMIPs were detected as 24.79 emu/g. Fourier transform infrared (FR-IR) spectroscopy showed that polymer groups were on the surface of the magnetic carrier. Adsorption experiment suggested the adsorption capability of Gen-MMIPs to genistein were 1.55 mg/g, and 2 the adsorption equilibrium was achieved within 20 min. Gen-MMIPs as dispersive solid-phase extraction adsorbent combined with HPLC was used to selectively separate genistein in soy sauce samples, the recoveries were ranged from 85.7% to 88.5% with the relative standard deviations (RSD) less than 5%, which proved this method can be used for the detection of genistein residues in real samples.

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