Periodic mesoporous organosilicas with helical and concentric circular pore architectures

Yuan, Pei, Zhao, Lingzhi, Liu, Nian, Wei, Guangfeng, Zhang, Yang, Wang, Yunhua and Yu, Chengzhong (2009) Periodic mesoporous organosilicas with helical and concentric circular pore architectures. Chemistry: A European Journal, 15 42: 11319-11325. doi:10.1002/chem.200802716


Author Yuan, Pei
Zhao, Lingzhi
Liu, Nian
Wei, Guangfeng
Zhang, Yang
Wang, Yunhua
Yu, Chengzhong
Title Periodic mesoporous organosilicas with helical and concentric circular pore architectures
Journal name Chemistry: A European Journal   Check publisher's open access policy
ISSN 0947-6539
1521-3765
Publication date 2009-10-26
Sub-type Article (original research)
DOI 10.1002/chem.200802716
Volume 15
Issue 42
Start page 11319
End page 11325
Total pages 7
Place of publication Weinheim, Germany
Publisher Wiley - VCH Verlag
Language eng
Formatted abstract
This study systematically investigates periodic mesoporous organosilicas (PMOs) with controlled helical and concentric circular (CC) pore architectures prepared through a basic-catalyzed sol–gel process by using an achiral cationic surfactant trimethyloctadecylammonium bromide (C18TAB) as a structure-directing agent, perfluorooctanoic acid (PFOA) as an additive, and 1,2-bis(triethoxysilyl)ethane (BTEE) as a hybrid silica precursor. By increasing the weight ratio of PFOA/C18TAB, a pore architecture transition of PMO materials from hexagonal-arrayed, straight longitudinal channels to helical and CC mesostructures is achieved; such a transition has not been observed before in PMO materials. Our discovery is helpful in understanding the supramolecular cooperative assembly of hybrid materials and their structural and morphological evolution, which are important in the future applications of PMO materials.
Keyword Helical structures
Mesoporous materials
Self-assembly
Surfactants
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: ERA 2012 Admin Only
Australian Institute for Bioengineering and Nanotechnology Publications
 
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Created: Mon, 17 Oct 2011, 21:51:38 EST by Professor Chengzhong Yu on behalf of Aust Institute for Bioengineering & Nanotechnology