Synthesis of chiral mesoporous silica by using chiral anionic surfactants
Synthesis of chiral mesoporous silica by using chiral anionic surfactants
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DOI：
10.1016/j.micromeso.2007.01.018
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发表时间：
2007-06
影响因子：
5.2
通讯作者：
T. Yokoi;Yusuke Yamataka;Y. Ara;S. Sato;Y. Kubota;T. Tatsumi
中科院分区：
文献类型：
--
作者：
T. Yokoi;Yusuke Yamataka;Y. Ara;S. Sato;Y. Kubota;T. Tatsumi
最近，使用一种衍生自氨基酸的手性阴离子表面活性剂，N-肉豆蔻酰-L-丙氨酸钠盐，使我们能够获得手性介孔二氧化硅。本研究以手性阴离子表面活性剂N-肉豆蔻酰-d-丙氨酸和N-肉豆蔻酰-l-丙氨酸为原料，成功合成了具有螺旋结构的手性介孔二氧化硅。用C14-l-AlaA和C14-d-AlaA合成的螺旋颗粒的左手/右手比证明分别为75/25和25/75，表明螺旋的主要手性由表面活性剂的手性指导。对手性介孔氧化硅的合成条件进行了优化。我们发现，手性介孔氧化硅的宏观形貌以及介观结构是非常敏感的合成条件。以C14-l-AlaA和C14-d-AlaA混合体系为研究对象，考察了手性表面活性剂的立体异构性对手性AMS介观结构和形貌的影响。
Recently, the use of a chiral anionic surfactant derived from amino acid, N-myristoyl-l-alanine sodium salt, has enabled us to obtain a chiral mesoporous silica. In this study, chiral mesoporous silicas with helical particles were successfully synthesized by using the chiral anionic surfactants N-miristoyl-d-alanine as well as N-miristoyl-l-alanine. The left-/right-handed ratios for the helical particles synthesized with C14-l-AlaA and C14-d-AlaA proved to be 75/25 and 25/75, respectively, suggesting that the predominant handedness of helices was directed by the handedness of the surfactants. The optimization of the synthesis conditions for obtaining a chiral mesoporous silica were conducted. We found that the macroscopic morphology as well as the mesostructure of the chiral mesoporous silica was extremely sensitive to the synthetic conditions. The influence of the stereoisomerism of the chiral surfactant on the mesostructure and morphology of chiral AMS was investigated by using a mixture of C14-l-AlaA and C14-d-AlaA.