Citation: WANG Qing, GUO Yong-Min, LI Yi, LI Bao-Zong. Preparation of Chiral Mesoporous Silica Using Phosphatidylcholine as a Chiral Additive[J]. Chinese Journal of Inorganic Chemistry, ;2013, 29(11): 2323-2326. doi: 10.3969/j.issn.1001-4861.2013.00.374 shu

Preparation of Chiral Mesoporous Silica Using Phosphatidylcholine as a Chiral Additive

1.
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China

Received Date: 27 May 2013
Available Online: 10 July 2013
Fund Project: 国家自然科学基金(No.21071103)资助项目。 (No.21071103)

Helical mesoporous silica nanorods were prepared through a so-gel approach using cetyltrimethylammonium bromide (CTAB) as the template and phosphatidylcholine (PC) as a chiral additive. The molar ratio of PC and CTAB is 1:21. The morphologies and pore architectures were characterized using field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), N₂ sorptions and X-ray diffraction. It was found that the mesoporous silica nanorods were about 30~50 nm in diameter and about 50~200 nm in length. The TEM images and the small-angle X-diffraction indicated that the pore channels arranged in a two-dimensional hexagonal structure. The FESEM images indicated that the ratio of the left-and right-handed nanorods is almost 1:1. However, the circular dichroism spectrum (CD) indicated that the nanorods tended to form a structure with homochirality at angstrom level. It seems that the chirality of PC has been successfully transferred to the walls of the helical mesoporous silica nanorods.
- chirality;mesoporous;silicas;circular dichroism spectrum
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沈阳化工大学材料科学与工程学院沈阳 110142