Publication: Formation of trimethylsilylated open-cage oligomeric azidophenylsilsesquioxanes
Issued Date
2011-05-15
Resource Type
ISSN
0022328X
Other identifier(s)
2-s2.0-79955054844
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Organometallic Chemistry. Vol.696, No.10 (2011), 2193-2198
Suggested Citation
Vuthichai Ervithayasuporn, Xin Wang, Burcin Gacal, Bahadir N. Gacal, Yusuf Yagci, Yusuke Kawakami Formation of trimethylsilylated open-cage oligomeric azidophenylsilsesquioxanes. Journal of Organometallic Chemistry. Vol.696, No.10 (2011), 2193-2198. doi:10.1016/j.jorganchem.2010.11.030 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/11553
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Formation of trimethylsilylated open-cage oligomeric azidophenylsilsesquioxanes
Abstract
Formation of open-cage oligomeric azidophenylsilsesquioxane was surprisingly discovered in the successive reduction and azidation reactions starting from octa(nitrophenyl)octasilsesquioxane. The mixture of oligomeric products was characterized after end-capping with trimethylsilyl groups. The IR spectra confirmed the introduction of azide function to aromatic moiety, and trimethylsilyl group on silsesquioxane framework. Together with the GPC result, NMR analysis revealed the introduction of different number of trimethylsilyl groups in the structure. Some of them maintained the cage-like silsesquioxane structure characterized by XRD analysis. Their TGA profiles gave a unique pattern with clear two-step mass loss with the first mass loss of about 8-10 wt% from 180 to 225 °C corresponding to a thermal decomposition of azide groups. © 2010 Elsevier B.V. All rights reserved.