Abstract: The present disclosure provides a method for preparing ((2,2-dimethyl-1,3-dioxane-5,5-diyl)bis(methylene))bis(bis(2-methoxyphenyl)phosphine), a ligand for a polyketone polymerization catalyst, under mild conditions with high purity and high yield. Therefore, the preparation method of the present disclosure can be easily applied to mass production.

Abstract: The present invention provides a biosensor for detecting allergies. The biosensor comprises a substrate; an electrode layer formed on a portion of an upper side of the substrate; a single-walled carbon nanotube layer formed on another portion of the upper side of the substrate; a linker layer formed on the single-walled carbon nanotube layer; and an antibody which is immobilized and bonded to the linker layer. In the biosensor for detecting allergies according to the present invention, 1-pyrenebutanoic acid succinimidyl ester is comprised as a linker on the substrate which is coated with a single-walled carbon nanotube, and the antibody which is capable of capturing an allergy-inducing protein is immobilized on the linker. When the allergy-inducing protein is captured by the antibody, a resistance value is changed, so that the allergy-inducing protein is capable of being detected with high sensitivity in a short time by sensing the changed resistance value.

Abstract: The present disclosure provides a method for preparing ((2,2-dimethyl-1,3-dioxane-5,5-diyl)bis(methylene))bis(bis(2-methoxyphenyl)phosphine), a ligand for a polyketone polymerization catalyst, under mild conditions with high purity and high yield. Therefore, the preparation method of the present disclosure can be easily applied to mass production.