Mechanism of Molecular Recognition on Tetrapetide-imprinted Monolith by Capillary Electrochromatography

Molecularly imprinted monoliths: Recent advances in the selective recognition of biomacromolecules related biomarkers

Biomarkers are significant indicators to assist the early diagnosis of diseases and assess the therapeutic response. However, due to the low-abundance of biomarkers in complex biological fluids, it is highly desirable to explore efficient techniques to attain their selective recognition and capture before the detection. Molecularly imprinted monoliths integrate the high selectivity of imprinted polymers and the rapid convective mass transport of monoliths, and as a result are promising candidates to achieve the specific enrichment of biomarkers from complex samples. This review summarizes the various imprinting approaches for the preparation of molecularly imprinted monoliths. The state-of-art advances as an effective platform for applications in the selective capture of biomacromolecules related biomarkers were also outlined. This article is protected by copyright. All rights reserved.

Molecular imprinting science and technology: a survey of the literature for the years 2004-2011

Herein, we present a survey of the literature covering the development of molecular imprinting science and technology over the years 2004-2011. In total, 3779 references to the original papers, reviews, edited volumes and monographs from this period are included, along with recently identified uncited materials from prior to 2004, which were omitted in the first instalment of this series covering the years 1930-2003. In the presentation of the assembled references, a section presenting reviews and monographs covering the area is followed by sections describing fundamental aspects of molecular imprinting including the development of novel polymer formats. Thereafter, literature describing efforts to apply these polymeric materials to a range of application areas is presented. Current trends and areas of rapid development are discussed.

An insight into the mechanism of CEC separation of template analogues on a norepinephrine-imprinted monolith

A monolith molecularly imprinted polymer (MIP) column was prepared from template (-)-norepinephrine, functional monomer (itaconic acid), and a cross-linker (either ethylene glycol dimethacrylate or divinylbenzene) in porogen N,N-dimethylformamide. Understanding the molecular recognition of a template using an MIP seems feasible. However, it is hard to explain the recognition properties of their analogues on an MIP. The separation mechanism was investigated with the addition of charged surfactants, native and derivatised β-cyclodextrin (β-CD), achiral crown ether, etc. to determine the retention behaviour of the template analogues. The addition of organic modifiers and the adjustment of separation conditions were used to manipulate the selectivity. No chiral recognition was observed under most of the test conditions except the experiment with the charged β-CD on the divinylbenzene-MIP column. The different experimental conditions led to differences in the mobilities of the analytes and resulted in remarkable enantiomeric separation of the template. We confirmed the presence of mixed-mode selectivity of the stationary phase based on hydrogen bonding, hydroelectric and hydrophobic interactions, and the electrophoretic mode.