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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.
Highlights
Compared to siloxanes, the introduction of theofSi–O–Ge group significantly the Polyhedral OligomericSilsesquioxanes, the general formula [RSiO1.5increases]n, are wellrefractive index values, which directly affects the optical properties of the compounds.defined, hybrid cage compounds with a three-dimensional structure and nanometric size [1].Such systems can be aprecursors of the SiO2/GeO2 phases to produce speSilsesquioxanes have siloxane core withinorganic inert or reactive organic andused inorganic functionalicialized spin glass The films, microlenses, lasers and adhesive layers [13]
In our previous studies on germasilsesquioxanes, we focused on obtaining derivatives with reactive functional groups, their spectroscopic characteristics and the functionalization of these compounds
All studied germasilsesquioxanes were synthesized via a corner-capping reaction of
Summary
The introduction of theofSi–O–Ge group significantly the Polyhedral OligomericSilsesquioxanes, the general formula [RSiO1.5increases]n , are wellrefractive index values, which directly affects the optical properties of the compounds.defined, hybrid cage compounds with a three-dimensional structure and nanometric size [1].Such systems can be aprecursors of the SiO2/GeO2 phases to produce speSilsesquioxanes have siloxane core withinorganic inert or reactive organic andused inorganic functionalicialized spin glass The films, microlenses, lasers and adhesive layers [13]. Defined, hybrid cage compounds with a three-dimensional structure and nanometric size [1]. Such systems can be aprecursors of the SiO2/GeO. 2 phases to produce speSilsesquioxanes have siloxane core withinorganic inert or reactive organic andused inorganic functionalicialized spin glass The films, microlenses, lasers and adhesive layers [13]. Type of substituents attached to the silsesquioxane skeleton economic standpoint, germanium-containing will Be Theemphasized most widely described and researched silsesquioxanes classes in literature areitsilsesquioxanes with aexamining closed structure different properties and possible applications, is definitely worth them of the T8 type, of which the structure of the silicon core resembles a cube (Figure 1A) [9] [2,3,4,5,6,7,8]. be Theemphasized most widely described and researched silsesquioxanes classes in literature areitsilsesquioxanes with aexamining closed structure different properties and possible applications, is definitely worth them of the T8 type, of which the structure of the silicon core resembles a cube (Figure 1A) [9]
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