| 胶体晶体中的两种排列方式及堆积模式 |
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| 引用本文： | 丛海林,曹维孝.胶体晶体中的两种排列方式及堆积模式[J].高等学校化学学报,2003,24(8):1489-1491. |
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| 作者姓名： | 丛海林 曹维孝 |
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| 作者单位： | 北京大学化学与分子工程学院, 北京 100871 |
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| 基金项目： | 国家自然科学基金 (批准号 :2 0 2 740 0 2 )资助 |
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| 摘 要： | 由单分散的有机或无机粒子制备三维有序的胶体晶体越来越受到人们的关注 1～ 3 ] ,单分散颗粒如何排布和堆积是形成三维有序胶体晶体的关键 .自然界中的蛋白石 (Opal)是由单分散 Si O2 粒子的三维有序堆积中渗入水溶性的硅酸盐固化而成的 .仿照自然界的模式由单分散的有机或无机粒子制备三维有序的胶体晶体是对当今科学技术的一个挑战 4 ] .以胶体晶体为模板制备有机、无机、金属和陶瓷等的多孔材料在催化、吸附以及光子晶体等方面具有重要的应用前景 5～ 9] .本文研究了以单分散的聚苯乙烯 -甲基丙烯酸甲酯 -丙烯酸 P(St- MMA- AA)…
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| 关 键 词： | 胶体晶体 六方排列 四方排列 六方堆积 面心立方堆积 |
| 文章编号： | 0251-0790(2003)08-1489-03 |
| 收稿时间： | 2003-02-18 |
Two Array Manners and Packing Modes in Colloidal Crystals |
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| CONG Hai-Lin,CAO Wei-Xiao.Two Array Manners and Packing Modes in Colloidal Crystals[J].Chemical Research In Chinese Universities,2003,24(8):1489-1491. |
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| Authors: | CONG Hai-Lin CAO Wei-Xiao |
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| Institution: | College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China |
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| Abstract: | Amonodispersed latex from styrene(St), methyl methacrylate(MMA) and acrylic acid(AA) was synthesized with the soap free emulsion polymerization, and the formation of colloidal crystal by evaporating the water of the latex was investigated.It has been confirmed that there exist two array manners, i.e., hexagonal and square array, and two packing modes, i.e., hexagonal packing and face-centered cubic packing in the forming process of colloidal crystals.The square array originated from the dislocation of the particle in the hexagonal array, the area of it depends on the temperature in the forming process.At a lower temperature such as at 0℃, relatively large areas of square array were observed in the formed colloidal crystal. |
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| Keywords: | Colloidal crystal Hexagonal array Square array Hexagonal packing Face-centered cubic packing |
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