Synthesis and characterization of multifunctional periodic mesoporous organosilica from diureidophenylene bridged organosilica precursor.
This paper reports the periodic mesoporous organosilicas (PMOs) functionalised with newly synthesized bis-silylated (1,1(1,4-phenylene (bis-3-(3-triethoxysilylpropyl)urea)(BSBDA)) organosilica with 1,2-bis(triethoxysilyl) ethane (BTSE) using a co-condensation process. X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), nitrogen adsorption-desorption, NMR (proton, 13C and 29Si) spectra, and MALDI-TOF were used to characterise and evaluate the structural properties. The results showed that BSBDA is linked covalently to the mesochannel of the PMO frameworks. The pore size and overall structural properties in the functionalised PMOs were found to depend on the loading amounts of BSBDA. The overall results suggested that the highly functionalised PMOs could be tuned even at high BSBDA loadings (25 wt%).
Australian Institute for Bioengineering and Nanotechnology (AIBN) (Building 75), The University of Queensland, Brisbane, St Lucia, OLD 4072, Brisbane, St Lucia, QLD 4072, Australia.
M Abdul
MA
Wahab
S W
SW
Chu
C
C
Anand
Chang-Sik
CS
Ha
D003432:Cross-Linking Reagents / Q000737:chemistry; D003460:Crystallization / Q000379:methods*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D017646:Organosilicon Compounds / Q000138:chemical synthesis*; D010316:Particle Size; D016062:Porosity; D013499:Surface Properties
D003432:Cross-Linking Reagents; D046911:Macromolecular Substances; D017646:Organosilicon Compounds