Abstract: Disclosed are a positive photosensitive resin composition including (A) a polybenzoxazole precursor including a functional group at a terminal end thereof, wherein the functional group is dissociated by light of about 400 nm to about 550 nm wavelength region and is acidified; (B) a photosensitive diazoquinone compound; and (C) a solvent, and a photosensitive resin film and a display device using the same.

Abstract: A polymer including a moiety represented by Chemical Formula 1, an organic layer composition including the polymer, an organic layer manufactured from the organic layer composition, and a method of forming patterns using the organic layer composition are provided. The definitions of the Chemical Formula 1 are the same as defined in the detailed description.

Abstract: Disclosed are a gene carrier in which polyethyleneglycol is conjugated with polyethyleneimine and a method for the synthesis thereof. The gene carrier is useful in transferring DNA, siRNA and negatively charged peptides.

Abstract: Disclosed are a positive photosensitive resin composition including (A) an alkali soluble resin including a repeating unit represented by the following Chemical Formula 1; (B) a photosensitive diazoquinone compound; and (C) a solvent, and a photosensitive resin film and a display device including the same. In the above Chemical Formula 1, each substituent is the same as defined in the detailed description.

Abstract: Disclosed are a positive photosensitive resin composition including (A) a polybenzoxazole precursor including a functional group at a terminal end thereof, wherein the functional group is dissociated by light of about 400 nm to about 550 nm wavelength region and is acidified; (B) a photosensitive diazoquinone compound; and (C) a solvent, and a photosensitive resin film and a display device using the same.

Abstract: The present invention relates to a magnetic resonance imaging (MRI) contrast agent coated with carboxylated mannan, particularly a carboxylated mannan coated superparamagnetic MRI contrast agent specifically targeting antigen presenting cells and having excellent in vivo stability, and a method for producing the same. The MRI contrast agent coated with carboxylated mannan of the present invention can provide excellent in vivo stability and biocompatibility owing to its high surface negative charge, and can be introduced specifically into antigen presenting cells owing to mannose of mannan, so as to visualize the antigen presenting cells and the tissue containing the antigen presenting cells in MRI.

Abstract: The present invention relates to a hydrophobic drug delivery conjugate, to which cyclodextrin, poly(maleic anhydride), and a hydrophobic drug are bonded, and to a pharmaceutical composition comprising the hydrophobic drug delivery conjugate as an active ingredient. The hydrophobic drug delivery conjugate according to the present invention can effectively control the release rate and the delivery rate of a hydrophobic drug by regulating the physicochemical bonding and/or composition of the cyclodextrin, poly(maleic anhydride), and hydrophobic drug, and can also increase the effect of the drug by significantly increasing the solubility of the hydrophobic drug. Further, the present invention can enable the type of the hydrophobic drug to be varied, as well as a peptide having target directivity to be introduced into a surface of the conjugate, such that the present invention can be applied to the treatment of various diseases in addition to cancer treatment.

Abstract: The present invention relates to a magnetic resonance imaging (MRI) contrast agent coated with carboxylated mannan, particularly a carboxylated mannan coated superparamagnetic MRI contrast agent specifically targeting antigen presenting cells and having excellent in vivo stability, and a method for producing the same. The MRI contrast agent coated with carboxylated mannan of the present invention can provide excellent in vivo stability and biocompatibility owing to its high surface negative charge, and can be introduced specifically into antigen presenting cells owing to mannose of mannan, so as to visualize the antigen presenting cells and the tissue containing the antigen presenting cells in MRI.

Abstract: Disclosed are a gene carrier in which polyethyleneglycol is conjugated with polyethyleneimine and a method for the synthesis thereof. The gene carrier is useful in transferring DNA, siRNA and negatively charged peptides.