Department of Chemical, Energy and Environmental Engineering, Faculty of Environmental and Urban Engineering, Kansai University, 3-3-35 Yamate-cho, Suita-shi, Osaka 564-8680, Japan.
Dalton Trans. 2013 Aug 21;42(31):11128-35. doi: 10.1039/c3dt51135a.
The synthesis of zeolitic imidazolate framework-8 (ZIF-8) films in an aqueous system was achieved. ZIF-8 films with controllable thickness were successfully grown on a modified substrate at room temperature. The 3-(2-imidazolin-1-yl)propyltriethoxysilane (IPTES) was used to first form a pseudo-surface of ZIF-8 on a glass substrate, followed by layer-by-layer growth. The film thickness of ZIF-8 was controlled within the range from 220 to 640 nm per growth cycle by changing the reactivity of the zinc source. Notably, the use of a preorganized zinc source led to drastic changes in the formation rate of ZIF-8. The use of a low-reactivity growth solution containing zinc acetate thus allowed the preparation of dense ZIF-8 films.
在水相体系中合成了沸石咪唑酯骨架-8（ZIF-8）薄膜。室温下，在改性基底上成功生长出具有可控厚度的 ZIF-8 薄膜。首先，3-（2-咪唑啉-1-基）丙基三乙氧基硅烷（IPTES）在玻璃基底上形成 ZIF-8 的拟表界面，然后进行层层生长。通过改变锌源的反应性，每生长一个循环，ZIF-8 的薄膜厚度可控制在 220 至 640nm 范围内。值得注意的是，使用预组织的锌源会导致 ZIF-8 的形成速率发生显著变化。使用含有乙酸锌的低反应性生长溶液，从而可以制备致密的 ZIF-8 薄膜。
