Preparation of large-scale 2D zeolite crystal array structures to achieve optical functionality
Preparation of large-scale 2D zeolite crystal array structures to achieve optical functionality
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DOI：
10.1016/j.micromeso.2008.06.028
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发表时间：
2009
影响因子：
5.2
通讯作者：
S. Hashimoto;Kazuo Samata;T. Shoji;Nobuyuki Taira;T. Tomita;S. Matsuo
中科院分区：
文献类型：
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作者：
S. Hashimoto;Kazuo Samata;T. Shoji;Nobuyuki Taira;T. Tomita;S. Matsuo
我们研究了一种改进技术的方法，该技术可通过共价键连接在基底上制备密堆积的圆柱形 L 沸石晶体单层，该技术最近被开发用于广泛使用。我们尝试制造沸石颗粒的垂直和水平单向排列。通过使用长宽比（长度除以宽度）为1.1的平板沸石晶体，在平板玻璃基板上实现了厘米级大面积的垂直排列，而长宽比为1.7的晶体则无法垂直排列。因此，确定了对成功对准重要的参数。另一方面，水平封装结构中的单向对准是通过使用预刻槽基板来实现的。我们发现沸石晶体和凹槽尺寸之间的关系是制备密堆积结构的关键因素。在这方面，我们目前的准备工作需要进一步改进，因为它导致结构具有许多空隙空间。此外，我们制备了负载单向排列染料的沸石薄膜以实现光学功能。
We examined a method to refine a technique to prepare close-packed monolayers of cylindrical zeolite L crystals tethered on a substrate through covalent linkages, which was developed recently for popular use. We attempted to fabricate both vertical and horizontal–unidirectional alignments of the zeolite particles. The vertical alignment for centimeter scale large areas was achieved on a flat glass substrate by using flat-based zeolite crystals with an aspect ratio (length divided by width) of 1.1 while the crystals with an aspect ratio of 1.7 failed to align vertically. Thus the parameters important for successful alignment were determined. On the other hand, the unidirectional alignment in the horizontal packing structures was achieved by employing pregrooved substrates. We found that the relationship between the sizes of zeolite crystals and grooves is a crucial factor for the preparation of a close-packed structure. In this respect, our present preparation requires further improvements because it resulted in structures with many void spaces. Furthermore, we prepared the zeolite films loaded with unidirectionally aligned dyes to achieve optical functionalities.