Disclosed is a graft copolymer containing a polyfluorene-based polymer as a main chain and a polyvinylidene fluoride (PVDF) as a side chain, and an element including the same. The graft copolymer contains both the polyfluorene-based polymer and the PVDF, so that the graft copolymer may increase miscibility between polymers to prepare a composite having excellent performance, prepare an uniform thin film through a solution process, and be used as a single material that exhibits both piezoelectric properties and luminescence properties.

The present invention relates to a novel compound having an alkoxysilyl group and an active ester group, a method for preparing the same, a composition comprising the same, and a use, wherein the novel compound exhibits improved low moisture absorption and/or low dielectric properties when cured as an epoxy composition, but is not accompanied by loss of thermal expansion characteristics. Disclosed are a novel compound of formulae AF to LF having an alkoxysilyl group and an active ester group, and a method for preparing the same, a composition comprising the same, and a use of same.

Disclosed is a bis-imide compound comprising two or more aryl moieties substituted with ethynyl moieties and the two or more aryl moieties each having one or more polar substituents. Further disclosed is a polymer composition comprising a copolymer polymerized from a monomer mixture of (a) one or more first monomers comprising a bis-imide compound comprising two or more aryl moieties substituted with ethynyl moieties and the two or more aryl moieties each having one or more polar substituents; and (b) one or more second monomers comprising two or more cyclopentadienone moieties. The polymer compositions exhibit favorable properties for use in electronics and displays applications.

Disclosed is a coating comprising a polymeric layer, wherein the polymeric layer comprises a reaction product of a first monomer comprising two or more aromatic acetylene groups and a second monomer comprising two or more cyclopentadienone groups, or a cured product of the reaction product. The coating may or may not additionally contain a crosslinker and/or a thermal acid generator. Optical thin films made from the coatings exhibit refractive indices that make them useful as interlayers for matching refractive indices between adjacent layers of display devices; thereby improving device output efficiency.

The present invention relates to a polymer having a novel structure used in a process for manufacturing a semiconductor and a display; an underlayer film composition for a process for manufacturing a semiconductor and a display, including the same; and a method for manufacturing a semiconductor element by using the same. The novel polymer of the present invention has both optimized etch selection ratio and planarization properties and excellent heat resistance, and thus the underlayer film composition including the same can be used as a hard mask in a semiconductor multilayer lithography process.

The present invention relates to a polar functional group-partially introduced polymer, a preparation method therefor, and an organic electronic element adopting the same. The organic electronic element of the present invention has excellent photoelectric conversion efficiency and stability and is very advantageous in commercialization, by adopting the polar functional group-partially introduced polymer of the present invention.

Disclosed herein are polymers formed by the condensation of bis(hydroxycarbyl)-aminophenolic compounds with aldehydes. The condensation polymers include one or more repeat units having bis(hydroxycarbyl)amino functionality. The polymers are useful as antifoulants, antipolymerants, rheology modifiers, dehazers, polymerization retardants, surfactants, or a combination of these in one or more industrial process streams.

A method for synthesizing a poly(phenylene) with high ion selectivity comprises dissolving an alkyl halide poly(phenylene) in a polar aprotic solvent to form a nonaqueous solution and adding an anhydrous nucleophile to the nonaqueous solution to replace the halide of the alkyl halide poly(phenylene) with a cationic group of the nucleophile. The poly(phenylene) can be used in anion exchange membranes.

A resist underlayer film forming composition contains a reaction product of an aromatic compound (A) having 6 to 60 carbon atoms and a compound represented by formula (B), and a solvent. (In the formula, X represent an oxygen atom or a nitrogen atom; Y represents a single bond, an oxygen atom or a nitrogen atom; X and Y may combine with each other to form a ring; and each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, a cyclic alkyl group having 3 to 8 carbon atoms or an aromatic group having 6 to 10 carbon atoms; provided that R.sub.2 is present only in cases where X is a nitrogen atom, and R.sub.4 is present only in cases where Y is a nitrogen atom.)

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In an aspect, the invention provides therapeutic agents comprising brush polymers that address challenges associated with conventional administration of free therapeutic peptides. In an embodiment, for example, the invention provides brush polymers incorporating one or more therapeutic peptides as side chain moieties. Therapeutic agents of the invention comprising brush polymers include high-density brush polymers including cross-linked brush polymers and brush block copolymers. In an embodiment, brush polymers of the invention exhibit proteolysis-resistant characteristics and maintain their biological function during formulation and administration. The invention also includes methods of making and using therapeutic agents comprising brush polymers.