Abstract:
A composition including a polyamic acid modified with an alkoxysilane group; and an oligo silica compound, wherein the polyamic acid modified with an alkoxysilane group includes a reaction product of (i) a condensation reaction product of an acid anhydride and a diamine, and (ii) a reactive organosilane compound, wherein the oligo silica compound includes a condensation reaction product of an organosilane diol and a an alkoxysilane compound, wherein an amount of silicon atoms in the composition is less than or equal to about 15 wt % based on a total weight of solid contents in the composition.
Abstract:
A composition for preparing a nonlinear optic material including an organic chromophore that is polarized by an electric field, a precursor that can form an inorganic material polymer by a sol-gel reaction, and a compatibilizer that can bind to both the organic chromophore and the inorganic material polymer, wherein the organic chromophore includes a functional group at a terminal end that can bind to both the inorganic material polymer and the compatibilizer, a nonlinear optic material prepared from the composition, a method of preparing the nonlinear optic material, and an electro-optic device including the nonlinear optic material are disclosed.
Abstract:
A slot extrusion coating method includes: preparing a composition including a condensation polymerization product of a diamine and a mixture of an acid dianhydride or an acid dianhydride and a reactive carbonyl compound, an imidized product thereof, or a mixture thereof, wherein the composition has a viscoelasticity having a tan δ of less than about 96 at a strain of about 1 percent and an angular frequency of more than about 0 to less than about 10 radians per second, and coating the composition on a substrate using a slit coater.
Abstract:
A liposome comprising elastin-like polypeptides, a pharmaceutical composition comprising the liposome, and a method of delivering active agents to a target site using the liposome.
Abstract:
A film including a polyimide-polybenzoxazole copolymer including a repeating unit represented by Chemical Formula 1: wherein in Chemical Formula 1, A1, A1′, A2, A3, m, and n are the same as described in the specification.