نتایج جستجو برای: molecular imprinted polymers

تعداد نتایج: 700357  

Background & Aims: Magnetically molecularly imprinted polymers (MMIPs) are assumed as kind of sorbent polymers ‎which can separate or determine bioactive compounds from environment fast and specifically.  ‎Magnetic properties, stability at various conditions (temperature , ionic strength and pH) and selective ‎function are among the advantages of these polymers in determin...

2010
Mara Soares da Silva Ana Aguiar-Ricardo Teresa Casimiro

Molecular imprinting is an emerging field that produces precise chemical and physical architectures that can bind analytes. The technique uses the functionality of the target molecule (template) to assemble a molecular recognition site by forming specific interactions with the matrix. We have recently proposed supercritical fluid technology to replace hazardous organic solvents in the synthesis...

Journal: :Analytical chemistry 2000
T Takeuchi A Dobashi K Kimura

Synthetic biotin-binding polymers were prepared by molecular imprinting. Methacrylic acid (MAA) was copolymerized with ethylene glycol dimethacrylate in the presence of biotin methyl ester (B-Me) in chloroform. Hydrogen-bonding-based complexation of B-Me with MAA generates the binding sites complementary to B-Me after extracting B-Me from the resulting copolymers. Data from NMR titration sugges...

2005
Elena Piletska Sergey Piletsky Kal Karim Ewald Terpetschnig Anthony Turner

________________________________________________________________________ Abstract The composition of new molecularly imprinted polymers (MIPs) specific for biotin was optimised using molecular modelling software. Three functional monomers: methacrylic acid (MAA), 2-(trifluoromethyl)acrylic acid (TFAA) and 2-acrylamido-2-methylpropanesulfonic acid (AMPSA), which demonstrated the highest binding ...

Journal: :Nanotechnology 2009
Xianwen Kan Zhirong Geng Yao Zhao Zhilin Wang Jun-Jie Zhu

Core-shell structural magnetic molecularly imprinted polymers (magnetic MIPs) with combined properties of molecular recognition and controlled release were prepared and characterized. Magnetic MIPs were synthesized by the co-polymerization of methacrylic acid (MAA) and trimethylolpropane trimethacrylate (TRIM) around aspirin (ASP) at the surface of double-bond-functionalized Fe(3)O(4) nanoparti...

2010
Liu Zhao Hua Ping Ling Xiang Ping Han Jihua Wang Ligang Pan

Molecular imprinting technique offers a means of producing practical materials that are able to recognize a certain molecule in terms of shape, size and chemical functionality. In order to obtain a highly selective recognition of organophosphorus pesticides (OPPs), we synthesized molecularly imprinted polymers (MIPs) using pirimiphos-methyl as the template, methacrylic acid as the monomer and e...

2016
Ningli Wu Zhimin Luo Yanhui Ge Pengqi Guo Kangli Du Weili Tang Wei Du Aiguo Zeng Chun Chang Qiang Fu

Surface molecularly imprinted polymers (SMIPs) for selective adsorption of ampicillin sodium were synthesized using surface molecular imprinting technique with silica gel as a support. The physical and morphological characteristics of the polymers were investigated by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), elemental...

Journal: :International Journal of Molecular Sciences 2008
Huiting Zhang Tao Song Fulin Zong Tiechun Chen Canping Pan

2-methylphenoxyacetic acid (2-MPA), 2-methyl-4-chlorophenxyacetic acid (MCPA) and 4-chlorophenoxyacetic acid (4-CPA) were imprinted to investigate the cross-selectivities of molecularly imprinted polymers (MIPs). The result indicates that 2-MPA, which is similar in shape, size and functionality with phenoxyacetic herbicides, are suitable to be used as a suitable template to prepare the MIPs for...

Journal: :Acta poloniae pharmaceutica 2013
Piotr Luliński

In recent years, the investigations of new drug delivery systems have been directed on the development of some "intelligent" drug delivery devices that are able to directly respond to the patient's individual needs. New drug delivery systems should maximize the efficiency of administrated therapeutic agents and improve the patient's quality of life. Introduction of the new drug delivery devices...

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