Surface-Functionalized Periodic Mesoporous Organosilica Hollow Spheres

Qiao, SZ, Lin, CX, Jin, YG, Li, Z, Yan, ZM, Hao, ZP, Huang, YN and Lu, GQ (2009) Surface-Functionalized Periodic Mesoporous Organosilica Hollow Spheres. JOURNAL OF PHYSICAL CHEMISTRY C, 113 20: 8673-8682. doi:10.1021/jp810844p


Author Qiao, SZ
Lin, CX
Jin, YG
Li, Z
Yan, ZM
Hao, ZP
Huang, YN
Lu, GQ
Title Surface-Functionalized Periodic Mesoporous Organosilica Hollow Spheres
Journal name JOURNAL OF PHYSICAL CHEMISTRY C   Check publisher's open access policy
ISSN 1932-7447
Publication date 2009-05-21
Year available 2009
Sub-type Article (original research)
DOI 10.1021/jp810844p
Open Access Status Not yet assessed
Volume 113
Issue 20
Start page 8673
End page 8682
Total pages 10
Editor George C Schatz
Place of publication United States
Publisher American Chemical Society
Language eng
Subject C1
090403 Chemical Engineering Design
100708 Nanomaterials
920405 Environmental Health
Abstract Surface-functionalized periodic mesoporous organosilica (PMO) hollow spheres are successfully synthesized by using a hybrid silica precursor, 1,2-bis(trimethoxysilyl)ethane (BTME), and five precursors with different functional groups (-SH, -NH(2), -CN, -C=C, -benzene) as well as surfactants, fluorocarbon and cetyltrimethylammonium 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) similar to -C=C from vinyltrimethoxysilane (VTMS) > -NH(2) 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.
Formatted abstract
Surface-functionalized periodic mesoporous organosilica (PMO) hollow spheres are successfully synthesized by using a hybrid silica precursor, 1,2-bis(trimethoxysilyl)ethane (BTME), and five precursors with different functional groups (-SH, -NH2, -CN, -C=C, -benzene) as well as surfactants, fluorocarbon and cetyltrimethylammonium 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) similar to -C=C from vinyltrimethoxysilane (VTMS) > -NH2 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
Keyword HETEROCYCLIC BRIDGING GROUPS
CONTROLLED DRUG-RELEASE
STRUCTURAL-CHARACTERIZATION
MESOSTRUCTURED SILICA
SHELL STRUCTURE
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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Created: Thu, 03 Sep 2009, 18:09:39 EST by Mr Andrew Martlew on behalf of Aust Institute for Bioengineering & Nanotechnology