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New Ceramics Precursors Containing Si and Ge Atoms—Cubic Germasilsesquioxanes—Synthesis,Thermal Decomposition and Spectroscopic Analysis |
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| Authors: | Aleksandra Skocze&#x; Dawid Fr&#x;ckowiak Robert E Przekop Mi&#x;osz Frydrych Ma&#x;gorzata Kasperkowiak Piotr Jele&#x; Maciej Sitarz Bogdan Marciniec |
| Institution: | 1.Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland; (A.S.); (M.F.);2.Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland; (D.F.); or (R.E.P.); (M.K.);3.Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland; (P.J.); (M.S.) |
| Abstract: | Compounds of the silsesquioxane type are attractive material precursors. High molecular weights and well-defined structures predestine them to create ceramics with a controlled composition at the molecular level. New molecular precursors of ceramic materials with the ratio of Si:Ge = 7:1 atoms were obtained. The influence of organic substituents on the thermal decomposition processes of germasilsesquioxanes was investigated. Some of the structures obtained are characterized by a high non-volatile residue after the thermal decomposition process. The introduction of the germanium atom to the structure of the silsesquioxane molecular cage reduces the thermal stability of the obtained structures. |
| Keywords: | silsesquioxanes germasilsesquioxanes POSS thermal analysis decomposition sublimation ceramics precursors FT-IR Raman spectroscopy |