Park Jin Seon, Lee Goo Soo, Lee Yun-Jo, Park Yong Soo, Yoon Kyung Byung
Center for Microcrystal Assembly, Department of Chemistry, Sogang University, Seoul 121-742, Korea.
J Am Chem Soc. 2002 Nov 13;124(45):13366-7. doi: 10.1021/ja0270569.
Shaking of adenine-tethering glass plates in an aqueous suspension of micrometer-sized, thymine-tethering zeolite crystals such as ZSM-5 (0.6 mum x 1.7 mum x 2.5 mum) or zeolite-A (1.7 mum x 1.7 mum x 1.7 mum) for 3 h at room temperature leads to facile assembly of monolayers of the zeolite microcrystals on the glass plates through the hydrogen-bonding interaction between the tethered adenine and thymine. Control experiments show that the presence of adenine and thymine on the respective solid surface is essential for the monolayer assembly. This establishes that even the micrometer-sized building blocks can be organized by a large number of well-defined weak hydrogen bonding. Increase in the assembly temperature to annealing temperatures leads to a marked increase in the rate of monolayer assembly and in the size of the domain in which zeolite crystals are closely packed in the same three-dimensional orientation.
在室温下，将腺嘌呤连接的玻璃板在微米级胸腺嘧啶连接的沸石晶体（如ZSM-5（0.6微米×1.7微米×2.5微米）或A型沸石（1.7微米×1.7微米×1.7微米））的水悬浮液中摇晃3小时，通过连接的腺嘌呤和胸腺嘧啶之间的氢键相互作用，可使沸石微晶在玻璃板上轻松组装成单层。对照实验表明，各自固体表面上存在腺嘌呤和胸腺嘧啶对于单层组装至关重要。这表明，即使是微米级的构建块也可以通过大量明确的弱氢键进行组织。将组装温度升高至退火温度会导致单层组装速率显著提高，并且沸石晶体以相同三维取向紧密堆积的区域尺寸也会增大。
