Logo image
Back
Self-assembly synthesis of mesoscopically ordered biphenyl-bridged organosilica films with molecular periodicity in the pore walls
Journal article   Peer reviewed

Self-assembly synthesis of mesoscopically ordered biphenyl-bridged organosilica films with molecular periodicity in the pore walls

Mohammad A Wahab and C He
Journal of Nanoscience and Nanotechnology, Vol.8(12), pp.6381-6386
2008
DOI: https://doi.org/10.1166/jnn.2008.468
url
https://doi.org/10.1166/jnn.2008.468View
Published Version

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 m 2g -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.

Details

Metrics

162 Record Views
2 Times Cited - Web of Science

InCites Highlights

These are selected metrics from InCites Benchmarking & Analytics tool, related to this output

Web Of Science research areas
Chemistry, Multidisciplinary
Materials Science, Multidisciplinary
Nanoscience & Nanotechnology
Physics, Applied
Physics, Condensed Matter
Logo image