Abstract
SynopsisBrittleness at raised temperature of novel organic inorganic hybrid material derived from cubic silsesquioxane as nano building block was improved while keeping high transparency as well as UV exposure durability. It is clarifi ed that brittleness of the hybrid material is attributed to low cross-linking density of the cured hybrid material due to rearrangement of vinyl group to lower functionality position during its cross-linking reaction. In order to improve the brittleness of the hybrid material, the chemical structure without the rearrangement of vinyl group is estimated by computational simulation.The material having estimated structure is then synthesized and the increase in cross linking density in the cured material was confirmed. Thus, tough, transparent, and UV durable hybrid material is demonstrated. This work also deals with improvement of molding process ability of the hybrid material. Hence potential of the hybrid to be used in optical device application is increased.
