Samsung Electronics Co., Ltd.

Sejong University

Wonmok Lee

Seongwoo Choi

Jungock Park

Jongin Lee

Woosung Jeon

Kyunghoon Cha

Insun Jung

Jungook Park

Sungkoo Han

Kyeonghyeon Ko

A method of and device for controlling a reflective color of a photonic crystal display device, capable of precisely controlling the distance between particles to display RGB full colors covering desired wavelength ranges. The method and device include using a mixed dispersion medium containing two or more kinds of solvents having different dielectric constants as a dispersion medium for a photonic crystal in a composition for a photonic crystal display device of which colors are controlled through the application of an electric field.

Method of and device for controlling reflective color of polymeric colloidal photonic crystal display using mixed dispersion medium

A phosphorous containing benzoxazine-based monomer, or a polymer thereof.

Phosphorous containing benzoxazine-based monomer, or polymer thereof

A benzoxazine-based monomer, a polymer thereof, an electrode for a fuel cell including the same, an electrolyte membrane for a fuel cell including the same, and a fuel cell using the same. The aromatic ring may contain up to 2 nitrogens within the ring. Single ring and fused ring substituents are attached to the pendent nitrogen. The ring substituents may be heterocyclic.

Benzoxazine-based monomer, polymer thereof, electrode for fuel cell including the same, electrolyte membrane for fuel cell including the same, and fuel cell using the same

A polybenzimidazole-base complex includes a polybenzimidazole-based material and a base, wherein a peak corresponding to NH of an imidazole ring of the polybenzimidazole-based material does not appear at a chemical shift of 12 to 15 ppm in aH nuclear magnetic resonance (H-NMR) spectrum of the polybenzimidazole-base complex. A crosslinked material may be formed as a polymerization product of a polybenzimidazole-base complex and a benzoxazine-based monomer. The crosslinked material may be used an electrolyte membrane for a fuel cell comprising the crosslinked material, and a fuel cell may include the electrolyte membrane.

Polybenzimidazole-base complex, crosslinked material of polybenzoxazines formed thereof, and fuel cell using the same

A phosphorous containing benzoxazine-based monomer, a polymer thereof, an electrode for a fuel cell including the same and an electrolyte membrane for a fuel cell, and a fuel cell including the same.

Phosphorous containing benzoxazine-based monomer, polymer thereof, electrode for fuel cell including the same, electrolyte membrane for fuel cell including the same, and fuel cell employing the same

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Seoul, South Korea

Wonmok Lee