High thermally stable polysiloxanes cross-linked with di(alkenyl) functionalized DDSQs exhibiting swelling abilities

A series of unique organic-inorganic hybrid materials varied in the construction of the applied polysiloxanes and di(alkenyl)functionalized double-decker silsesquioxanes was designed, synthesized and fully characterized by spectroscopic methods. The presented synthetic strategy based on hydrosilylation reaction conditions was optimized to ensure complete Si-H consumption along with the avoidance of side-products enabling the formation of materials with high conversion. The obtained results revealed the influence of the type and content of DDSQ in cross-linked polymers structures on their thermal and swelling properties which has not been reported so far. Our studies can lead to the preparation of specific materials with tailored properties.