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化学学报
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化学学报 ›› 2009, Vol. 67 ›› Issue (5): 442-446. 上一篇    下一篇

研究论文

聚合有机凝胶印迹膜对D-和L-苯丙氨酸的选择性吸附

熊 芸a 王 宏*,b 靳 磊a 冯桂龙a 张圣祖a 杨亚江*,a

  

  1. (华中科技大学化学与化工学院 a高分子科学与工程研究所 b分析科学研究所 武汉 430074)

  • 投稿日期:2008-07-10 修回日期:2008-09-25 发布日期:2009-03-14
  • 通讯作者: 杨亚江

Selective Adsorption of D- and L-Phenylalanine on the Imprinted Polymerized Organogel Membranes

Xiong, Yun a Wang, Hong *,b Jin, Lei a Feng, Guilong a
Zhang, Shengzu a Yang, Yajiang *,a
  

  1. (a Institute of Polymer Science and Engineering,

    bInstitute of Analysis Science, School of Chemistry and Chemical
    Engineering, Huazhong University of Science and Technology, Wuhan 430074)

  • Received:2008-07-10 Revised:2008-09-25 Published:2009-03-14
  • Contact: Yang, Yajiang

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被引次数

24 | 7

以1-甲基-2,4-二(N’-十八烷脲基)苯为凝胶剂，以液体单体丙烯酸-2-乙基己酯、甲基丙烯酸甲酯、二甲基丙烯酸聚乙二醇(200)酯以及模版分子和光敏引发剂的混合物为溶剂，研究表明，这种二烷基脲型凝胶剂在这些单体混合物中可进行超分子自组装，形成互相缠绕的具有纳米尺寸的纤维状聚集体，最终导致这些单体混合物首先形成稳定的超分子有机凝胶。然后经UV光引发聚合，经乙醇抽提凝胶剂聚集体和模板分子，制备了一种新型分子印迹的聚合有机凝胶薄膜。探讨了不同凝胶剂浓度、模板分子浓度、单体混合物配比所制备的印迹聚合有机凝胶薄膜对D-和L-苯丙氨酸吸附效率的影响。结果表明所制备的印迹聚合超分子凝胶对L-苯丙氨酸吸附效率约为对D-苯丙氨酸吸附效率的3～4倍，表现出明显的选择性吸附性。

关键词: 有机凝胶, 聚合, 分子印迹, 吸附

1-Methyl-2,4-bis(N’-n-octadecylureido)benzene (MBB) was used as a gelator. A mixture of 2-ethylhexyl acrylates (EHA), methyl methacrylate (MMA) and polyethylene glycol dimethacrylates (PEG200DMA) was used as solvent in the presence of template and initiator. MBB can self-assemble in this solvent mixture to form entangled nano-sized fibrillar aggregates, ultimately turn the solvent mixture into stable supramolecular organogels. After polymerization by UV initiation and removal of MBB aggregates and template by ethanol extraction, a novel imprinted polymerized organogel membranes was obtained for the absorption of D- and L-phenylalanine. The effects of MBB concentrations, template concentrations and mass ratio of monomers on the adsorption efficiencies were investigated. The results indicate that the adsorption efficiencies for L-phenylalanine were 3～4 times higher than that for D-phenylalanine, exhibiting distinct selective adsorption.

Key words: organogels, polymerization, molecular imprinting, adsorption