Abstract
Herein, a facile and efficient synthetic route to unique hybrid materials containing polysiloxanes and mono(alkyl)silsesquioxanes as their pendant modifiers (T8@PS) was demonstrated. The idea of this work was to apply the hydrosilylation reaction as a tool for the efficient and selective attachment of mono(alkenyl)substituted silsesquioxanes (differing in the alkenyl chain length, from -vinyl to -dec-9-enyl and types of inert groups iBu, Ph at the inorganic core) onto two polysiloxanes containing various amount of Si-H units. The synthetic protocol, determined and confirmed by FT-IR in situ and NMR analyses, was optimized to ensure complete Si-H consumption along with the avoidance of side-products. A series of 20 new compounds with high yields and complete β-addition selectivity was obtained and characterized by spectroscopic methods.
Highlights
Due to their hybrid nature, organosilicon compounds may be applied in the development of advanced, multifunctional materials, owing to a combination of organic and inorganic segments.A fundamental example of such derivatives based on Si-O-Si linkages is polysiloxanes, which are the most widely recognized and studied organosilicon polymers
We reported on an efficient synthetic protocol for the preparation of a library of mono(alkenyl)silsesquioxanes varying in the length of the alkenyl chain and in the inert substituents (R = Et, iBu, Cy, iOc, Ph) at the silsesquioxane core [101]
It is well known that the type of inert and functional groups determine the physical and chemical properties of silsesquioxane [56,60,87] and as a consequence, may influence the properties of polysiloxanes modified with these compounds
Summary
Due to their hybrid nature, organosilicon compounds may be applied in the development of advanced, multifunctional materials, owing to a combination of organic and inorganic segments.A fundamental example of such derivatives based on Si-O-Si linkages is polysiloxanes, which are the most widely recognized and studied organosilicon polymers. The cage-type polysilsesquioxanes derivatives, commonly known as silsesquioxanes (SQs), for their three-dimensional nanosized structures, have attracted considerable attention from the synthetic perspective (tunable possibility for modification), and for their application feature (thermal stability) [1,2,3,4] These systems, thanks to their unique properties, have influenced almost all branches of science and have found numerous examples of applications in everyday life, e.g., optoelectronics (OLEDs) [5,6,7], dendrimers [8,9,10,11], catalysts [12,13], medicine and biochemistry (drug delivery systems, dental applications) [14,15,16], lithium and fuel batteries, and conductive matrices [17,18,19,20], food industries, cosmetics, and many more [21,22,23,24,25,26,27,28,29,30,31]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
