Preparation of Chiral 1,4-Phenylene-silicas via Chiral Low-molecular-weight Amphiphiles

来源 :高等学校化学研究(英文版) | 被引量 : 0次 | 上传用户:liangxinnet
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Chiral organic-inorganic hybrid silicas can be prepared via the self-assemblies of chiral surfactants and gelators as templates.However,the relationship between the chirality of the hybrid silica and the structure of the surfactant/gelator has not been systemically studied.Herein,a series of chiral low-molecular-weight amphiphiles(LMWAs) derived from L-valine was synthesized.Their alkyl chains were n-butadecyl,n-hexadecyl and n-octadecyl,respectively.They can form viscous liquids in pure water,and physical gels in tetrahydrofuran,cyclohexanone,acetonitrile,acetone,chlorobenzene and nitrobenzenc.Chiral 1,4-phenylene-silicas were prepared via the self-assemblies of these LMWAs as templates.With increasing the alkyl chain length,the 1,4-phenylene-silicas changed from short mesoporous nanorods to long nanotubcs. The circular dichroism spectra of the 1,4-phenylene-silicas indicated that the long nanotubes exhibit the strongest chirality.
其他文献
近年来,资源重组整合极大地解放了煤炭生产力及其可持续发展的能力,同时在矿井的信息化、现代化和安全生产水平诸方面都得到了大幅跃升。但也筑高了资源整合煤矿企业生产成本。
众所周知,农林是我国国民经济的支柱,现阶段的农林经济的发展问题备受大家关注,主要的原因还是在于我国的农林经济方面存在着一定的问题,还有很多的困难需要克服。如何更好的对我
辛亥革命是中国近现代史上一件重大历史事件,具有伟大的历史意义.今天我们纪念它,就要正确把握辛亥革命爆发的必然性及其历史意义,科学认识其历史局限及经验教训,更好地继承
An efficient and simple protocol of copper-catalyzed C-S bond formation between aryl halides and inexpensive and commercially available aminothiourea is reporte
This paper is concerned with the inverse problem of scattering of time-harmonic acoustic waves by an inhomogeneous penetrable obstacle in a piecewise homogeneou
Making use of the Carlson-Shaffer convolution operator,we introduce and study a new class of analytic functions related to conic domains.The main object of this
To find new extradiol dioxygenases(EDOs,EC 1.13.11.2),a metagenomics library was constructed from polychlorinated biphenyl-contaminated soil and was screened fo
A series of 5-substitued-3-(5-(4-(furan-2-yl)-6-methyl-2-oxo/thioxo-1,2,3,4-tetrahydropyrimidin-5-yl)-1,3,4-thiadiazol-2-ylimino)indolin-2-one derivatives were
Mixed iron-cobalt oxide (Co/Fe molar ratio=1/5) are prepared using a simple co-precipitation procedure and studied for the catalytic oxidation of carbon monoxid
A new series of N-arylquinoline derivatives 5a-x bearing 2-morpholinoquinoline moiety has been synthesized by one pot base catalyzed cyclocondensation reaction