نتایج جستجو برای: surface molecularly imprinted polymer

تعداد نتایج: 725954  

Journal: :The Analyst 2014
Fangdi Wei Yanzi Wu Guanhong Xu Yankun Gao Jing Yang Liping Liu Ping Zhou Qin Hu

A novel molecular imprinted sensor based on CdTe@SiO2 quantum dots (QDs) was developed for norepinephrine (NE) recognition. The molecularly imprinted polymer (MIP) on the surface of CdTe@SiO2 QDs (CdTe@SiO2@MIP) was characterized by Fourier transform infrared spectroscopy, transmission electron microscopy and fluorescence spectroscopy. The synthesized nanosensor had a distinguished selectivity ...

2015
Mengchun Zhou Nana Hu Shaohua Shu Mo Wang

An efficient, rapid, and selective method for sample pretreatment, namely, molecularly imprinted matrix solid-phase dispersion (MI-MSPD) coupled with gas chromatography (GC), was developed for the rapid isolation of four phosphorothioate organophosphorus pesticides (tolclofos-methyl, phoxim, chlorpyrifos, and parathion-methyl) from carrot and yacon samples. New molecularly imprinted polymer nan...

Journal: :Organic & biomolecular chemistry 2013
Carrie Brisbane Adam McCluskey Michael Bowyer Clovia I Holdsworth

Molecularly imprinted polymeric films (MIPFs) highly selective to 1R,2S(-)ephedrine (L-ephedrine, EPD) were produced by phase inversion post-polymerization imprinting on poly(acrylonitrile-co-methyl methacrylate-co-acrylic acid) (PAMA) terpolymers. The inclusion of methyl methacrylate (MMA) to the polymer formulation resulted in enhanced EPD selectivity which appears to be dictated by polymer c...

2013
Chaomeng Dai Juan Zhang Yalei Zhang Xuefei Zhou Shuguang Liu

A new molecularly imprinted polymer (MIP) adsorbent for clofibric acid (CA) was prepared by a non-covalent protocol. Characterization of the obtained MIP was achieved by scanning electron microscopy (SEM) and nitrogen sorption. Sorption experimental results showed that the MIP had excellent binding affinity for CA and the adsorption of CA by MIP was well described by pseudo-second-order model. ...

Journal: :Chemical communications 2013
Serena Ambrosini Selim Beyazit Karsten Haupt Bernadette Tse Sum Bui

A solid-phase synthesis approach to prepare molecularly imprinted polymer nanoparticles (MIP-NPs) specific for trypsin is described. The protein is immobilized on a solid support upon which thermoresponsive MIP-NPs are synthesized. The MIP-NPs are released by a simple temperature change, resulting in synthetic antibody mimics exhibiting high specificity and selectivity for trypsin.

2011
Eduardo M. A. Dourado Carmelo Herdes Paul R. van Tassel Lev Sarkisov

In this article we present a model for molecularly imprinted polymers, which considers both complexation processes in the pre-polymerization mixture and adsorption in the imprinted structures within a single consistent framework. As a case study we investigate MAA/EGDMA polymers imprinted with pyrazine and pyrimidine. A polymer imprinted with pyrazine shows substantial selectivity towards pyraz...

Journal: :Chemical communications 2014
Man Zhao Cong Zhang Ying Zhang Xianzhi Guo Husheng Yan Huiqi Zhang

A facile and highly efficient approach to obtain narrowly dispersed hydrophilic and magnetic molecularly imprinted polymer microspheres with molecular recognition ability in a real biological sample as good as what they show in the organic solvent-based media is described for the first time.

Journal: :Chemical communications 2005
A Salinas-Castillo I Sánchez-Barragán J M Costa-Fernández R Pereiro A Ballesteros J M González A Segura-Carretero A Fernández-Gutiérrez A Sanz-Medel

A novel molecularly imprinted polymer (MIP) of high interest for room temperature phosphorescence (RTP) sensing systems is described; the synthesized MIP contains iodine as internal heavy atom in the polymeric structure and its applicability for RTP sensing of fluoranthene at microg L(-1) levels is demonstrated.

Journal: :Advanced drug delivery reviews 2005
A G Mayes M J Whitcombe

Molecular imprinting is a method of inducing molecular recognition properties in synthetic polymers in response to the presence of a template species during formation of the three-dimensional structure of the polymer. The molecularly imprinted polymers (MIPs) prepared in this way have been termed "plastic antibodies" and combine the robustness of the polymer scaffold with binding properties mor...

Journal: :Analytical and bioanalytical chemistry 2009
Yahya S Al-Degs Adnan S Abu-Surrah Khalid A Ibrahim

Selective polymeric extractants were prepared for preconcentration of Cibacron reactive red dye, a dye that is often applied with Cibacron reactive blue and Cibacron reactive yellow for dyeing of fabrics. The best extractant was fabricated (in chloroform) using methacrylic acid (as monomer), ethylene glycol dimethacrylate (as crosslinker), AIBN (as initiator for polymerization), and red dye as ...

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