香草醛分子印迹聚合物的制备及其性能研究

采用分子印迹技术,以香草醛为模板分子,甲基丙烯酸为功能单体,乙二醇二甲基丙烯酸酯为交联剂,偶氮二异丁睛为引发剂,在乙腈溶液中制备了香草醛分子印迹聚合物。用于液相色谱固定相可将其与结构类似物阿魏酸基线分离,并用紫外光谱法对功能单体进行了选择。     

杀铃脲分子印迹聚合物制备及识别性能的研究

采用分子印迹技术,以杀铃脲为模板分子,甲基丙烯酸为功能单体,乙二醇二甲基丙烯酸酯为交联剂,在四氢呋喃溶剂中制备了杀铃脲分子印迹聚合物。以平衡吸附及高效液相色谱的方法对聚合物进行了评价。印迹聚合物对模板分子有较强的吸附能力和良好的选择性,可以很好的分离模板分子及其结构类似物。     

药物柳胺酚分子印迹聚合物的制备及识别性能研究

采用分子印迹技术合成了对药物柳胺酚有高选择性的印迹聚合物,通过平衡吸附及高效液相色谱的方法对聚合物进行了评价。结果表明,制备的印迹聚合物对模板分子有很强的吸附能力和良好的选择性,可以很好的分离模板分子及其结构类似物。     

橙皮素分子印迹聚合物的制备及其性能研究

采用分子印迹方法,以橙皮素为模板分子,乙二醇二甲基丙烯酸酯为交联剂,偶氮二异丁腈为引发剂,本体聚合方式制备了橙皮素分子印迹聚合物。紫外分光光度法对功能单体进行选择,将该聚合物作液相色谱固定相,可实现橙皮素与结构类似物染料木素的基线分离。     

乙胺嘧啶分子印迹聚合物的制备及其性能研究

采用分子印迹技术,以乙胺嘧啶为模板分子,甲基丙烯酸为功能单体,乙二醇二甲基丙烯酸酯为交联剂,偶氮二异丁腈为引发剂,在苯甲醇和乙腈混合溶液中制备了乙胺嘧啶分子印迹聚合物。用于液相色谱固定相,可将乙胺嘧啶与结构类似物敌菌净基线分离。吸附实验表明,印迹聚合物远大于非印迹聚合物的吸附量,说明印迹聚合物对乙胺嘧啶有特异的吸附性。     

水相中马尿酸分子印迹聚合物的制备及其性能研究

采用分子印迹技术,以马尿酸为模板分子,在水相中制备其印迹聚合物。用于液相色谱固定相,结果表明,该聚合物固定相表现出良好的分离选择性,能够使马尿酸与和其结构相似的苯甲酸及咖啡酸快速基线分离。并通过平衡吸附法分析了印迹聚合物的识别特性,结果表明分子印迹聚合物对马尿酸有特异性吸附。     

极性溶剂中邻氨基苯甲酸分子印迹聚合物的制备及色谱研究

以邻氨基苯甲酸为印迹分子,2-乙烯基吡啶为功能单体,在强极性溶剂甲醇、水体系中,制备了邻氨基苯甲酸的分子印迹聚合物.高效液相色谱评价(HPLC)表明,该聚合物固定相分离邻氨基苯甲酸与其位置异构体对氨基苯甲酸、邻氨基苯甲酸与其结构类似物邻苯二胺,均获得好的分离效果,并且通过流动相中水含量对分离效果影响的研究,证明了分子识别中疏水作用是主要作用力.     

N-水杨酰苯胺分子印迹聚合物的制备及识别性能研究

采用分子印迹技术,以N-水杨酰苯胺为模板分子,丙烯酰胺为功能单体,乙二醇二甲基丙烯酸酯为交联剂,偶氮二异丁腈为引发剂,在甲醇溶液中制备了N-水杨酰苯胺分子印迹聚合物。用平衡吸附及高效液相色谱的方法对聚合物进行了评价,结果表明印迹聚合物对N-水杨酰苯胺有较强的亲和性和良好的选择性。     

马尿酸分子印迹聚合物的合成及性能研究

以马尿酸为模板分子,2-乙烯基吡啶为功能单体,乙二醇二甲基丙烯酸酯为交联剂,偶氮二异丁腈为引发剂,在甲醇溶液中制备了马尿酸分子印迹聚合物。该聚合物对模板分子具有良好的亲和性和选择性,用作液谱固定相可将其与结构类似物酪氨酸快速基线分离,并对功能单体种类进行了选择。     

分子印迹技术手性分离氨基酸衍生物（I）一分子印迹聚合物的制备、色谱评价及物理化学表征

利用分子印迹技术制备了对L-特丁氧碳基色氨酸或D-特丁氧碳基色氨酸印迹的丙烯酰胺分子印迹聚合物。色谱评价结果表明，印迹分子L—Boc-Trp的离解常数(3．287mmol/L)要小于非印迹分子D—Boc—Irp的离解常数(4．379mmol／L)，说明分子印迹聚合物对印迹分子具有特异亲和作用。采用扫描电镜和红外光谱等物理化学表征技术从结构上对这种特异性作了进一步的分析。结果表明，分子印迹聚合物是一种具有多层次孔结构的聚合物，为溶质的扩散提供了良好的通道；在聚合物表面存在可与印迹分子相互作用的官能团。     

磁性分子印迹聚合物的制备与应用研究

磁性分子印迹聚合物是在磁性微粒表面利用分子印迹技术合成具有超顺磁性、高选择性、高吸附性和特异性识别的聚合物。能在外加磁场作用下实现快速分离和定向移动,是一种新型高分子材料。本文主要介绍了物理法、化学法和模板法3种磁性微粒的制备方法,以及利用分子印迹技术制备磁性分子印迹聚合物,并探讨了悬浮聚合、乳液聚合和沉淀聚合3种聚合方法的研究进展,总结了磁性分子印迹聚合物在农药残留、兽药残留、重金属残留和生物医学方面的应用。分析表明磁性分子印迹聚合物在生物医学领域,尤其是抗菌治疗方面有良好的发展前景。     

Preparation and characterization of molecularly imprinted polymer of bovine serum albumin

Molecularly imprinted polymer beads of bovine serum albumin (BSA) were prepared via inverse phase suspension polymerization, using BSA as the template molecule, a combination of acrylamide and methacrylic acid (MAA) as double functional monomers, and N, N′‐methylene bisacrylamide as the crosslinker. The effect of different monomer ratios and degrees of crosslinking were investigated. When both selectivity and physical properties of the resultant polymer beads were taken into account, the ratio of MAA in the total monomers was chosen at 40% (m/m) and the degree of crosslinking at 30% (n/n), the resultant polymer beads had good selectivity (α = 2.77) and good physical properties. The effects of pH and temperature were studied. It turned out that the functionalization of polymers of BSA prepared via inverse‐phase suspension polymerization exhibited specific recognition for BSA. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012     

氟喹诺酮类药物沙拉沙星分子印迹聚合物的制备

本文采用本体聚合法,以沙拉沙星为模板分子合成了沙拉沙星分子印迹聚合物,并用高效液相色谱法研究了印迹聚合物的识别性能及作为色谱固定相的分离及影响因素,该固定相对模板分子有较好的的特异性识别能力。     

三唑酮分子印迹纳米球的制备及应用

建立了烟叶中8种三唑类杀菌剂残留的分子印迹固相萃取-超高效液相色谱-串联质谱（MISPE-UPLC-MS/MS）检测方法。实验中,运用计算机模拟技术筛选最佳功能单体及溶剂,并确定最优聚合反应配比,估算了TDF-MAA的自组装过程与红外光谱图,热力学分析表明TDF-MAA自组装为吸热非自发过程,预聚合反应温度拟定为30℃;采用沉淀聚合法制备了三唑酮分子印迹聚合物纳米颗粒,颗粒粒径分布均匀,平均粒径为200nm;该纳米颗粒对模板分子及其结构类似物具有良好的特异性吸附能力,针对模板分子的分离印迹因子达到2.42;将加标烟叶样品经该纳米颗粒组装的固相萃取柱进行前处理,用UPLC-MS/MS分析前处理液,烟叶中8种三唑类杀菌剂的固相萃取回收率为70.14%～105.43%,检出限为4.82～11.97ng/mL,相对标准偏差（RSD）为0.26%～2.27% （n=6）,实现了复杂基质烟叶中多种三唑类杀菌剂的同时检测。     

焦性没食子酸分子印迹聚合物的制备与吸附特征研究

以焦性没食子酸为模板分子,丙烯酸为功能单体,甲醇为溶剂,研究了模板分子与功能单体的结合比例,表明焦性没食子酸和丙烯酸之间通过氢键形成1∶1型配合物。在模板分子与功能单体、交联剂物质的量的比为1∶4∶20的条件下,采用沉淀聚合法制备了焦性没食子酸分子印迹聚合物微球。静态吸附实验表明,可制备出吸附量大且特异性识别能力较高的分子印迹聚合物,对焦性没食子酸有较高的亲和性和选择性。采用恒温振荡平衡吸附法以及Scatchard分析研究了聚合物的吸附特征,结果表明焦性没食子酸分子印迹聚合物在水环境下存在2种吸附位点,最大表观吸附量分别为7.5516μg/mg和11.9225μg/mg,平衡离解常数分别为9.2720×10-3mmol/L和0.1892 mmol/L。     

Magnetic molecularly imprinted polymer nanoparticles coupled with high performance liquid chromatography for solid‐phase extraction of carvedilol in serum samples

Herein, we report a magnetic molecularly imprinted polymers (m‐MIPs) using Fe₃O₄ as a magnetic component, carvedilol as a template molecule for the solid‐phase extraction (MISPE) as the sample clean‐up technique combined with high‐performance liquid chromatography (HPLC) and for the controlled release of carvedilol at different pH values of 1.0 (simulated gastric fluid), 6.8 (simulated intestinal fluid), and 7.4 (simulated biological fluid). The adsorption kinetics was modeled with the pseudo‐first‐order and pseudo‐second‐order kinetics, and the adsorption isotherms were fitted with Langmuir and Freundlich models. The performance of the m‐MIPs for the controlled release of carvedilol was assessed and results indicated that the magnetic MIPs also have potential applications in controlled drug release. Furthermore, the m‐MIPs were applied to the extraction of carvedilol from human blood plasma samples. Carvedilol can be quantified by this method in the 2–350 μg L^?1 concentration range. The limit of detection and limit of quantification in plasma samples are 0.13 and 0.45 μg L^?1. The results from HPLC showed good precision (3.5% for 50.0 μg L^?1) and recoveries (between 85 and 93) using m‐MIP from human plasma samples. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 41209.     

Preparation of (S)‐ibuprofen‐imprinted polymer and its molecular recognition study

Two molecularly imprinted polymers (MIPs) were prepared using (S)‐ibuprofen as the template molecule as well as methacrylic acid (MAA) or 4‐vinylpyridine and ethylene glycol dimethacrylate (EGDMA) as the functional monomer and crosslinker, respectively. Free radical polymerization was carried out at 4°C under ultraviolet (UV) radiation. The MIPs thus obtained were ground into 25–44 μm, which were slurry packed into analytical columns. The template molecules were removed by acetic acid/methanol solution (1:9, v/v). high‐performance liquid chromatography (HPLC), with UV detection, was used to evaluate the binding performance of the MIP for the template. The selectivity of (S)‐ibuprofen and naproxen on the host–guest system were assessed using acetonitrile‐based mobile phases. The limits of detection of ibuprofen and naproxen were found to be 0.1844 mmol/L and 0.3264 mmol/L, while the limits of quantitation were 0.6262 mmol/L and 1.0909 mmol/L, respectively. The stationary phase was applied successfully to the commercial tablet analysis. Ibuprofen and naproxen were extracted from tablets with acetonitrile; analysis results showed a good relative standard deviation (RSD) of 0.81–1.24% and accuracy from ?4.01 to +2.98% for ibuprofen as well as an RSD of 0.59–0.86% and accuracy from ?4.01 to ?2.01% for naproxen. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 2972–2979, 2006     

三聚氰胺分子印迹固相萃取小柱的研制及其应用

用本体聚合法制备三聚氰胺分子印迹聚合物,通过静态平衡吸附实验及固相萃取实验表征其固相萃取性能,结合HPLC法对实际奶粉样品中的三聚氰胺进行测定.三聚氰胺模板聚合物的吸附能力强于空白聚合物;固相萃取柱对三聚氰胺标准溶液(0.3 mmoL/L)一次性萃取率达97.01%,奶粉样品中三聚氰胺测定的平均回收率为101.2%.印...     

pH-responsive molecularly imprinted polymer for sorption and rapid desorption of dibutyl phthalate

The pH-responsive molecularly imprinted polymers (SR-MIPs) for the removal of dibutyl phthalate (DBP) were obtained. The polymers were synthesized using methyl methacrylate, methacrylic acid, divinylbenzene, and a template mixed at different ratios allowing to optimize the process. The so-prepared SR-MIPs were evaluated at various pH values in processes of DBP sorption. The studies covered evaluation of uptake capacity, sorption kinetics, selectivity, and elution. The imprinted samples are characterized by improved factors comparing to their non-imprinted analogues, revealing also pH-sensitivity. The highest removal of DBP (130 mg g^?1) was achieved at pH = 6, while pH-driven desorption (90%) was the most efficient at pH = 8.