分子烙印技术在分析化学中的应用

分子烙印技术是一种制备具有特定选择性和亲合性的分子识别材料的技术。它在烙印分子存在的情况下,功能性单体与交联剂共聚制得高交联的聚合物网络,移去烙印分子后就得到了对烙印分子记忆效应的分子烙印聚合物。它在分析化学,催化和有机合成等领域都具有应用价值。该文主要介绍了烙印聚合物在分析化学中的应用研究,着重于它在色谱技术中的应用,尤其是在毛细管电色谱中的应用。最后对该技术的发展前景进行了讨论。     

分子烙印技术的应用与最新进展

分子烙印技术是合成对模板分子具有特定识别能力的聚合物的技术。在第一届分子烙印技术国际会议报告文集的基础上对117篇文献进行了综述。总结了最近分子烙印技术在对映体或立体异构体分离、固相萃取、化学传感器和模拟生物传感器及催化生物反应工程方面取得的成绩和存在的问题。扼要介绍了在分子烙印技术发展过程中出现的新方法、新用途，指明了分子烙印技术的发展趋势。     

分子印迹-仿生传感器的研究进展

分子印迹技术是制备具有选择性分子识别能力聚合物(分子印迹聚合物)的新兴化学合成技术。分子印迹聚合物的一个重要应用是在生物传感器中取代生物分子作为识别元件,研制耐受性强、低成本的分子印迹仿生传感器。综述了分子印迹技术的基本原理及其在仿生传感器方面的应用研究现状,并对分子印迹仿生传感器的发展前景进行了评述。引用文献24篇。     

分子烙印聚合物作为高效毛细管电泳添加剂的研究

分子洛印聚合物（molecular imprinted polymer)是一种高选择的有分子记忆效应的主体分子,通常在非极性环境中制备和应用。该文在极性溶剂中利用离子化作用和疏水作用制备了非共价的分子烙印聚合物,并将其作为高效毛细管电泳流动相添加剂;在含水缓冲溶液条件下,研究了单体种类、分子烙印聚合物颗粒度和含量、缓冲溶液pH值以及分离电压对分子烙印聚合物识别模板分子的影响。结果证明了在质子溶剂中制备和应用非共价分子烙印聚合物是可行的。     

分子烙印聚合物固定相分离咖啡因和茶碱的研究

分子烙印是一种新兴的分子识别技术,利用该技术可制备对烙印分子具有“预定”识别能力的高分子聚合物,即分子烙印聚合物（MIP）,从而可以对性质和组成相近的组如对映体等进行分离^[1,2],咖啡因与茶碱的分子烙印聚合物的制备以及二者分析已有报道^[3-9],但存在两种完全相反的结论。一种观点认为,即使以咖啡因为烙印分子,所制备的聚合物对咖啡因分子的选择性吸附能力也小于茶碱^[3-6]。而另一种观点则认为,在一定条件下,如以咖啡因分子为烙印分子的烙印聚合物对咖啡因分子具有更强的吸附能力^[7-9]。本文分别采用茶碱和咖啡因作为烙印分子,以甲基丙烯酸等为功能单体,在不同条件下制备了多种非共价型分子烙印聚合物,并系统地考察了其作 为HPLC固定相对咖啡因和茶碱的分离能力,同时也对烙印分子应具备的条件加以探讨。     

分子印迹聚合物的制备及其传感器应用研究

分子印迹技术于近十年内得到了飞速的发展,已经成为当前研究的热点之一.本文主要介绍了分子印迹聚合物的原理以及一些常用制备方法.分子印迹聚合物的一个重要应用是在化学传感器中作为识别元件,研制稳定、低成本的分子印迹传感器.分子印迹聚合物在传感器领域的应用是分子印迹技术的一个重要方面,本文综述了分子印迹聚合物在化学传感器方面的应用研究现状,并对分子印迹传感器的发展前景进行了评述.     

新型功能单体分子印迹聚合物的研究进展

分子印迹聚合物是近年发展起来的新型重要分子识别材料,功能单体是其识别性能最重要的影响因素之一,因此,对新型功能单体分子印迹聚合物的研究越来越受重视.基于分子印迹聚合物在固相萃取、色谱柱分离、传感器等方面的应用,对新型功能单体分子印迹聚合物的研究进展进行了综述.     

原位聚合法制备氨基安替比林分子烙印聚合物及分离特性的研究

以氨基安替比林为模板分子,采用原位聚合法制备了具有特定识别性能的棒状分子烙印聚合物。通过考察烙印分子的化学基团对分离的影响,以及离子作用和氢键作用在分离中的贡献,论证了分子烙印聚合物选择性专一的作用机理。结果表明,这种棒状聚合物对模板分子及其类似物有很好的分离能力。     

一种具有高度选择性的技术——分子烙印

分子烙印技术作为一个新概念被提出来 ,虽然国外已有一部分人在这方面作出了一些研究 ,但国内这方面的报道却很少 ,本文从自组装方式和预聚合方式两种合成分子烙印聚合物的模型 ;烙印分子、功能性聚合物单体及聚合条件的选择 ;分子烙印聚合物的特点、应用及展望等作了评述     

一种具有高速选择性的技术—分了烙印

分子烙印技术作为一个新概念被提出来,虽然国外已有一部分人在这方面作出了一些研究,但国内这方面的报道却很少,本文从自组装方法和预聚合方法两种合成分子烙印聚合物的模型,烙印分子、功能性聚合物单体及聚合条件的选择,分子烙印聚合物的特点,应用展望等作了评述。     

Recognition of proteins and peptides: Rational development of molecular imprinting technology

The creation of tailor-made receptors which are able to recognize molecular targets with high affinity and selectivity has attracted much attention in the field of chemistry, physics, and biology. Molecular imprinting has proved to be an effective technique for generating specific recognition sites in synthetic polymers. The synthesis of molecular imprinted polymers specific for proteins and peptides has been a focus for many scientists working in the area of molecular recognition, since the creation of synthetic polymers that can specifically recognize biomacromolecules is a very challenging but potentially extremely rewarding work. These polymers with specificity for biological macromolecules have considerable potential for applications in the areas of solid phase extraction, catalysis, medicine, clinical analysis, drug delivery, environmental monitoring, and sensors. In this review, the authors discuss the developed approaches associated with the imprinting of peptides and proteins, and provide an overview of the significant progress achieved within this field. Finally, the possible mechanism of the molecular imprinting and recognition has been discussed.     

Molecular Imprinting Fibrous Membranes of Poly（ acrylonitrile-co-acrylic acid） Prepared by Electrospinning

Introduction Overthepastfewdecades,molecularimprinting hasbeendescribedasatechnologyforpreparing“mo leculardoors”whichcanbematchedto“template keys”.Ithasbeenfoundtobeasimpleandeffective approachtointroducespecificrecognitionsitesintosyn theticpolymers…     

水相识别分子印迹技术

在各种基于超分子方法的仿生识别体系中,分子印迹聚合物已经证明是一种有潜力的合成受体,受到了广泛的关注。传统的分子印迹技术通常是在有机溶剂中制备对小分子具有选择性的印迹聚合物,而在水相中制备及识别生物大分子的研究仍具有相当的挑战性。从小分子到生物大分子、从有机相到水相,反映了分子印迹技术的发展趋势。本文对最近几年分子印迹在水相制备与识别方面的最新进展进行了总结与评述,探讨了水相识别印迹聚合物的设计策略与制备方法;着重介绍了水相识别技术在固相萃取、色谱固定相、药物控释、中药有效成份提取以及生物分子识别等方面的应用;指出了提高水相识别选择性的途径并对其将来的发展进行了建议与展望。     

Molecular imprinting for removing highly toxic organic pollutants

Molecular imprinting technology allows synthesis of polymers with specific recognition ability towards target pollutants, which show potential to selectively remove Highly Toxic Organic Pollutants (HTOPs) in the presence of common organic matrices that are thousands of times more abundant than the targets. This feature article summarizes the current development of molecular imprinting for removing HTOPs from polluted water, with a special emphasis on the application of molecularly imprinted polymers to improve the efficiency of photocatalytic and biological degradation of HTOPs in wastewater.     

Highly selective separations by capillary electrochromatography: molecular imprint polymer sorbents

Molecular imprint polymers (MIPs) are synthesized in the presence of a template, or 'imprint' molecule which results in the formation of specific recognition cavities complementary to the template in shape and chemical functionality. The resultant MIP then acts as a selective binding medium for the template molecule. The utility of MIPs lies in the selectivity of the rebinding process, which is based on molecular recognition. In many cases, the selectivity achieved with MIPs toward a particular molecule is comparable to that observed with antibodies. This has led to the application of MIPs to several areas of analytical chemistry including immunoassays, sensors and separations media. One of the most successful application areas of MIPs has been as chromatographic sorbents, where they have been utilized predominately in chiral separations. The use of MIP sorbents in CEC is attractive in that it combines the selectivity of a molecular recognition process with the enhanced flow dynamics of CEC, which can result in higher efficiency and shorter analysis times. This paper will review the use of molecular imprinted stationary phases in CEC. Following a brief introduction to molecular imprinting, various methodologies for preparation of MIP-CEC capillaries in addition to applications of the technique will be discussed.     

Molecular imprinting for anion recognition in aqueous media

Molecular imprinting technology is an attractive approach of creating recognition sites in polymeric materials by using the templating approach found in many natural systems. These recognition sites have memory to the target molecule that enables selective recognition of the template species. Molecularly imprinted polymers (MIPs) have been used in a wide range of areas including separation and isolation, catalysis, chemical sensing, and drug delivery. This review aims at highlight the recent advances in the application of molecular imprinting technology for inorganic and small organic anion recognition in aqueous media.

Imprinted polymers-tailor-made mimics of antibodies and receptors

The technique of molecular imprinting allows the formation of specific recognition sites in synthetic polymers through the use of templates or imprint molecules. These recognition sites mimic the binding sites of antibodies and other biological receptor molecules. Molecularly imprinted polymers can therefore be used in applications relying on specific molecular binding events. The stability, ease of preparation and low cost of these materials make them particularly attractive. This review focuses on recent developments and advances in the field of molecularly imprinted materials, with special emphasis on applications in immunoassays and sensors recently developed by our group and by others.     

Electrochemically synthesized polymers in molecular imprinting for chemical sensing

This critical review describes a class of polymers prepared by electrochemical polymerization that employs the concept of molecular imprinting for chemical sensing. The principal focus is on both conducting and nonconducting polymers prepared by electropolymerization of electroactive functional monomers, such as pristine and derivatized pyrrole, aminophenylboronic acid, thiophene, porphyrin, aniline, phenylenediamine, phenol, and thiophenol. A critical evaluation of the literature on electrosynthesized molecularly imprinted polymers (MIPs) applied as recognition elements of chemical sensors is presented. The aim of this review is to highlight recent achievements in analytical applications of these MIPs, including present strategies of determination of different analytes as well as identification and solutions for problems encountered.