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Formation of Helical Organic-Inorganic Hybrid Silica Nanotubes Using a Chiral Anionic Gelator

Formation of Helical Organic-Inorganic Hybrid Silica Nanotubes Using a Chiral Anionic Gelator

Liwen Wang, Hairui Wang, Yi Li, Wei Zhuang, Zhaoyong Zhu, Yuanli Chen, Baozong Li, Yonggang Yang

J Nanosci Nanotechnol. 2011 Mar;11(3):2427-32.

PMID: 21449403

Abstract:

Right-handed helical organic-inorganic hybrid silica nanotubes were prepared using a chiral anionic gelator with 3-aminopropyltrimethoxysilane as a co-structure-directing agent and 1,4-bis(triethoxysilyl)benzene, 4,4'-bis(triethoxysilyl)-1,1'-biphenyl, bis(triethoxysilyl)methane, 1,2-bis(triethoxysilyl)ethane, and 1,2-bis(triethoxysilyl)ethene as the precursors. The sol-gel reactions were carried out in a mixture of water and ethanol at the volume ratio of 2.2:1.8. The nanostructures were studied using field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). For 4,4'-biphenylene-silica nanotube, the circular dichroism spectrum indicates at least some of the biphenyl rings within the walls stack in chiral form. The TEM images taken after different reaction time reveal a cooperative mechanism. The growth of the organic self-assemblies and the adsorption of the hybrid silica oligomers occurred at the same time.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP123640937	4,4′-Bis(triethoxysilyl)-1,1′-biphenyl		123640-93-7	Price
AP2615181	1,4-Bis(triethoxysilyl)benzene		2615-18-1	Price

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