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synthesis of homoveratric acid-imprinted polymers and their evaluation as selective separation materials合成homoveratric acid-imprinted聚合物及其评价选择性分离材料.pdf

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synthesis of homoveratric acid-imprinted polymers and their evaluation as selective separation materials合成homoveratric acid-imprinted聚合物及其评价选择性分离材料

Molecules 2011, 16, 3826-3844; doi:10.3390/molecule OPEN ACCESS molecules ISSN 1420-3049 /journal/molecules Article Synthesis of Homoveratric Acid-Imprinted Polymers and Their Evaluation as Selective Separation Materials Mariusz Dana, Piotr Luliński and Dorota Maciejewska * Department of Organic Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland; E-Mails: mariusz.dana@.pl (M.D.); piotr.lulinski@.pl (P.L.) * Author to whom correspondence should be addressed; E-Mail: dorota.maciejewska@.pl; Tel.: +48 22 5720643; Fax: +48 22 5720643. Received: 13 January 2011; in revised form: 16 March 2011 / Accepted: 28 April 2011 / Published: 5 May 2011 Abstract: A bulk polymerization method was used to easily and efficiently prepare homo-veratric acid (3,4-dimethoxyphenylacetic acid)-imprinted polymers from eight basic monomers: 2-vinylpyridine, 4-vinylpyridine, 1-vinylimidazole, N-allylaniline, N-allyl- piperazine, allylurea, allylthiourea, and allylamine, in the presence of homoveratric acid as a template in N,N-dimethylformamide as a porogen. The imprinted polymer prepared from allylamine had the highest affinity to the template, showing an imprinting factor of 3.43, and allylamine polymers MIP8/NIP8 were selected for further studies. Their binding properties were analyzed using the Scatchard method. The results showed that the imprinted polymers have two classes of heterogeneous binding sites char