New Photocurable Acrylic/Silsesquioxane Hybrid Optical Materials: Synthesis, Properties, and Patterning

Abstract

Synthesis, properties, and patterning of new acrylic/silsesquioxane hybrid materials are reported. PMA‐functionalized PHSSQ was synthesized by hydrosilylation and then formulated with acrylate monomer mixtures to yield the photocurable materials. Experiments suggest that the thermal/mechanical properties of the parent acrylic polymers could be significantly enhanced by incorporating nano‐sized silsesquioxane moieties. The refractive index and optical loss were reduced by increasing the silsesquioxane content. The hybrid materials could be photocured and developed a Y‐shape channel pattern; potential applications include uses in patterned electronic and optoelectronic devices.magnified image

Formation of Fine Pattern from Polyarylate-Silicone Copolymer by the Application of Reaction Development Patterning

“…Organic polymer/silica hybrids often increase thermal stability, surface planarity and optical transparency as compared with the corresponding organic polymers [12][13][14]. In our previous work, PI-silicone copolymer afforded negative-tone pattern by RDP using tetramethylammonium hydroxide/water/NMP/methanol as developer [15].…”

Thermal properties of new bismaleimide resins containing hydrogen silsesquioxane and diallyl bisphenol A

“…Hydrogen silsesquioxane (HSQ) as one of POSS monomers had been attracted increasing interest in scientific research and technological innovation 15–20. HSQ could be used as Si/SiO 2 film precursor,21 negative resist,22 and low‐k material 23.…”

Photocurable epoxy/cubic silsesquioxane hybrid materials for polythiourethane: Failure mechanism of adhesion under weathering

“…Recently, inorganic–organic hybrid coatings are widely used as interfacial modifiers to improve the properties such as adhesion, barrier properties, and mechanical strength 4, 13–17. Cubic silsesquioxanes (CSSQ) possess unique characteristics with a well‐defined, three‐dimensional nanostructure containing silica cage and the organic functional groups on the silica cage surface with a diameter range of 0.5–1.5nm 18–21.…”

“…For example, methacrylate‐functionalized CSSQ‐based dental restorative composites, prepared via photoinitiated free radical polymerization, are found to improve mechanical strength 26. Su et al17 reported that thermal mechanical properties of acrylic polymers were subsequently enhanced by incorporating nanosized polysilsesquioxane. In the present work, multifunctional epoxy monomers and oligomers including epoxy‐functionalized CSSQ were polymerized cationically by UV radiation in the presence of cationic photoinitiator, particularly, for application in lenses.…”