Phase-segregation-induced self-assembly of anisotropic MFI microbuilding blocks into compact and highly b-oriented monolayers.
Phase-segregation-induced self-assembly of anisotropic MFI microbuilding blocks into compact and highly b-oriented monolayers.
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DOI：
10.1021/la1048425
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发表时间：
2011-02
期刊：
影响因子：
--
通讯作者：
Yi Liu;Yanshuo Li;Weishen Yang
中科院分区：
文献类型：
--
作者：
Yi Liu;Yanshuo Li;Weishen Yang
采用一种新的相分离诱导自组装方法制备了一种致密的高度b取向的MFI单分子膜。当MFI微晶均匀分散在含有微量粘合剂（亚油酸）的适当分散剂（仲丁醇）中时，这些微构件在气液界面自发自组装成紧凑的单层。特别地，观察到粘合剂仅在与水溶液相分离之后才起作用。讨论了分散剂和粘合剂的种类对所制备的MFI单分子膜最终形貌的影响。在这些结果的基础上，提出了一种机制来阐明这些MFI结构单元在空气-水界面处的紧凑和定向组装的驱动力。
A compact and highly b-oriented MFI monolayerwas fabricated with a novel phase-segregation-induced self-assembly method. When MFI microcrystals were dispersed uniformly in an appropriate dispersant (sec-butanol) containing a trace amount of binding agent (linoleic acid), these microbuilding blocks were spontaneously self-assembled into a compact monolayer at an air-liquid interface. In particular, it was observed that the binding agent took effect only after being phase-segregated from the aqueous solution. The influence of the kind of dispersants and binding agents on the final morphology of the as-prepared MFI monolayers was discussed. On the basis of these results, a mechanism was proposed to elucidate the driving force for the compact and oriented assembly of these MFI building blocks at the air-water interface.