Self-Assembly Synthesis of Mesoscopically Ordered Biphenyl-Bridged Organosilica Films with Molecular Periodicity in the Pore Walls

Wahab, M. Abdul and He, Chaobin (2008) Self-Assembly Synthesis of Mesoscopically Ordered Biphenyl-Bridged Organosilica Films with Molecular Periodicity in the Pore Walls. Journal of Nanoscience and Nanotechnology, 8 12: 6381-6386. doi:10.1166/jnn.2008.468


Author Wahab, M. Abdul
He, Chaobin
Title Self-Assembly Synthesis of Mesoscopically Ordered Biphenyl-Bridged Organosilica Films with Molecular Periodicity in the Pore Walls
Journal name Journal of Nanoscience and Nanotechnology   Check publisher's open access policy
ISSN 1533-4880
1533-4899
Publication date 2008-12-01
Sub-type Article (original research)
DOI 10.1166/jnn.2008.468
Open Access Status Not Open Access
Volume 8
Issue 12
Start page 6381
End page 6386
Total pages 6
Place of publication Valencia, CA, United States
Publisher American Scientific Publishers
Language eng
Formatted abstract
Mild acidic one-step self-assembled synthesis of periodic mesoporous biphenyl-bridged organosilica films having hydrogen-bonded large molecular-scale periodicity in the pore walls from 4,4-bis(triethoxysilyl)biphenyl (BTSBp) and cetyltrimethylammonium bromide (CTAB) is successfully described for the first time. High resolution X-ray diffraction analysis (HRXRD) along with transmission electron microscope observation (TEM) revealed the formation of periodic mesophase with molecular periodicity in the pore walls. The nitrogen adsorption-desorption isotherm shows a type-IV isotherm with a pore diameter of 3.1 nm and a Brunauer-Emmett-Teller surface area of 714 m2g -1. FT-IR and NMR spectroscopic data confirmed that biphenyl fragment is covalently linked with silicon atoms in final acidic-ethanol washed material. The obtained molecular-scale periodicity by structural model (1.389 nm) is consistent with experimental HRXRD value 1.40 nm. Nanoindentation hardness of biphenyl-bridged PMO films was found to be dependant on experimental conditions. Copyright © 2008 American Scientific Publishers All rights reserved.
Keyword Self-Assembly
Pmo
Sol-Gel Process
Mesostructure
Crystalline PMO
Mesoporous Organosilica
Structural-Characterization
1,2-Bis(triethoxysilyl)ethane
Functionalization
Surfactants
Future
Pmos
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

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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