Surface-functionalized periodic mesoporous organosilica hollow spheres
Date
2009
Authors
Qiao, S.
Lin, C.
Jin, Y.
Li, Z.
Yan, Z.
Hao, Z.
Huang, Y.
Lu, G.
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Advisors
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Journal article
Citation
The Journal of Physical Chemistry C: Energy Conversion and Storage, Optical and Electronic Devices, Interfaces, Nanomaterials, and Hard Matter, 2009; 113(20):8673-8682
Statement of Responsibility
Shi Zhang Qiao, Chun Xiang Lin, Yonggang Jin, Zhen Li, Zhimin Yan, Zhengping Hao, Yining Huang and Gao Qing (Max) Lu
Conference Name
Abstract
Surface-functionalized periodic mesoporous organosilica (PMO) hollow spheres are successfully synthesized by using a hybrid silica precursor, l, 2-bis(trimethoxysilyl)ethane (BTME), and five precursors with different functional groups (-SH, -NH<inf>2</inf>, -CN, -C=C., -benzene) as well as surfactants, fluorocarbon and cetyltrimethylammoniuni bromide, combining a new vesicle and liquid crystal "dual templating" technique. Different disruption effects on the final mesostructure are observed following the order of-SH from 3-mercaptopropyltrimethoxysilane (MPTMS) > - benzene from (trimethoxysilyl)benzene (TMSB) - - C=C from vinyltrimethoxysilane (VTMS) > - NH<inf>2</inf> from 3-aminopropyltriethoxysilane (APTES) > - CN from 3-cyanopropyltriethoxysilane (CPTES). The particle size, cavity size, and wall thickness of these hollow spheres can be adjusted by changing the amount of precursors or surfactants applied. In terms of providing better control over surface properties of products and giving more uniform surface coverage of functional groups, this direct synthesis method may benefit future production of hollow particles by a combination of various bridged organic and terminal functional groups for more versatile applications in catalyst, separation, drug/gene delivery, microelectronics field, etc. © 2009 American Chemical Society.
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© 2009 American Chemical Society