利用Langmuir单层膜诱导合成CaF_2单晶  

Synthesis of CaF_2 Single Crystal Induced by Langmuir Monolayers

作　　者：王宝基[1] 张兴堂[1] 薛中会[1] 戴树玺[1] 李蕴才[1] 黄亚彬[1] 杜祖亮[1] 

机构地区：[1]河南大学特种功能材料重点实验室,开封475001

出　　处：《无机材料学报》2006年第1期12-16,共5页Journal of Inorganic Materials

基　　金：国家自然科学基金(90306010;20371015)"973"前期专项(2002CCC02700)河南大学自然科学基金(04YBRW055)

摘　　要：利用SEM、XPS、XRD等手段研究了以山嵛酸(BA)Langmuir单层膜为模板在位诱导氟化钙单晶的生长情况．结果表明,在山嵛酸单分子膜诱导作用下,形成的氟化钙晶体形状比较规则、边缘清晰、尺寸较大,且沿(111)晶面取向生长．这一结果可以通过CaF2晶体的(111)面与山嵛酸Langmuir膜之间存在的一定晶格匹配得到合理解释．Crystallization of inorganic solids at self-organized organic or biomacromolecular surfaces is an important process in biomineralization and crystal engineering. Thereinto, Langmuir monolayers are often used as simple models of biomineralization; they can guide the growth of oriented crystals of specific structure, size, and morphology. In this paper, the growth of the CaF2 crystals induced in situ by Langmuir monolayers as the template was investigated by means of SEM, XPS and XRD. The results of XRD show that CaF2 grows only along the （111） face under benhenic acid （BA） monolayer, which indicates （111） direction is preferable orientation for the growth of CaF2 crystals; SEM shows that the morphology of the CaF2 crystals induced by BA monolayer is relatively regular and simplex, but in the bulk solution, it＇s irregular and easy to form large size grains. Those may be reasonably explained by lattice matching between the benhenic acid headgroups in the monolayer and the CaF2 crystals lattice which were fabricated under monolayer.

关 键 词：山嵛酸 Langmuir单层膜 氟化钙单晶 

分 类 号：O614[理学—无机化学]