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设计合成了聚甲基丙烯酸2-(4-碘-2,3,5,6-四氟苯氧基)乙酯(PIPEMA)和聚甲基丙烯酸3-(3-吡啶基)丙酯(PPyPMA),经过层层组装和随后的紫外可见光谱的检验,发现可以在丙酮和丁酮中组装PIPEMA/PPyPMA卤键多层膜,但是当以四氢呋喃(THF)或氯仿为组装溶剂时未能获得多层膜.另外,在丁酮中组装的卤键多层膜在pH 3～13的水溶液中稳定存在,然而在THF、氯仿和吡啶中的脱附率大于97%.为了提高多层膜在有机溶剂中的稳定性我们采取了两条途径:(1)以1,3-二溴丙烷为交联剂的多层膜的交联使其在THF中的脱附率小于6%;(2)采用同时具有氢键给体和卤键给体的共聚物代替PIPEMA进行组装使多层膜在THF中的脱附率降低至46%.
Design and synthesis of poly (2-iodo-2,3,5,6-tetrafluorophenoxy) ethylmethacrylate (PIPEMA) and poly 3- (3-pyridyl) ). After multilayer assembly and subsequent UV-Vis examination, it was found that PIPEMA / PPyPMA halogen-bond multilayers could be assembled in acetone and butanone, but failed to gain much when tetrahydrofuran (THF) or chloroform was used as assembly solvent In addition, the halogen bond multilayers assembled in butanone are stably present in aqueous solution at pH 3-13, however, the desorption rate in THF, chloroform and pyridine is more than 97% Solvent Stability We have taken two routes: (1) the cross-linking of multi-layer membranes with 1,3-dibromopropane as crosslinking agent gave less than 6% desorption rate in THF; (2) The assembly of the copolymer with hydrogen bond donor and halogen bond donor instead of PIPEMA reduced the desorption rate of the multilayer film in THF to 46%.