Synthesis and bio-adsorptive properties of large-pore periodic mesoporous organosilica rods

Qiao, S. Z., Yu, C. Z., Xing, W., Hu, Q. H., Djojoputro, H. and Lu, G. Q. (2005) Synthesis and bio-adsorptive properties of large-pore periodic mesoporous organosilica rods. Chemistry of Materials, 17 24: 6172-6176. doi:10.1021/cm051735b


Author Qiao, S. Z.
Yu, C. Z.
Xing, W.
Hu, Q. H.
Djojoputro, H.
Lu, G. Q.
Title Synthesis and bio-adsorptive properties of large-pore periodic mesoporous organosilica rods
Journal name Chemistry of Materials   Check publisher's open access policy
ISSN 0897-4756
1520-5002
Publication date 2005-11-29
Sub-type Article (original research)
DOI 10.1021/cm051735b
Volume 17
Issue 24
Start page 6172
End page 6176
Total pages 5
Place of publication Washington, D.C., USA
Publisher American Chemical Society
Collection year 2005
Language eng
Subject C1
291899 Interdisciplinary Engineering not elsewhere classified
620107 Cotton
291804 Nanotechnology
1007 Nanotechnology
0303 Macromolecular and Materials Chemistry
0904 Chemical Engineering
0912 Materials Engineering
Formatted abstract
Highly ordered large-pore periodic mesoporous organosilica (PMO) with a rodlike morphology was successfully synthesized at low acid concentrations and in the presence of inorganic salt using triblock copolymer P123 as a template. The inorganic salt can not only promote the formation of highly ordered mesoporous structure but also control the morphology of PMO materials. The adsorption of bovine heart cytochrome c (cyt c) on PMO was studied at different ionic strengths and pHs by comparing with the adsorption on pure silica materials with similar morphology and pore structure. The results show that the adsorbed amount reaches the maximum around the isoelectric point of cyt c and the PMO materials do not have higher adsorbed capacity than SBA-15 silica. The specific adsorption amounts of cyt c on PMO or pure silica decrease as ionic strengths increase at all pH conditions. Our results directly support the conclusion that the electrostatic interaction between cyt c and PMO/pure silica surface is more dominant than hydrophobic forces in the bioadsorption of cyt c.
© 2005 American Chemical Society
Keyword Catalytic-activity
Channel walls
Chemistry, Physical
Cytochrome-c
Hybrid
Immobilization
Materials Science, Multidisciplinary
Mesoporous materials
Molecular-scale Periodicity
Morphology
Organic groups
Protein adsorption
Silica
Synthesis (chemical)
Ionic strengths
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

 
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Created: Wed, 15 Aug 2007, 07:53:18 EST