Abstract:
본발명에따른양친매성제미니고분자화합물은친수성부위와소수성부위를동시에가지고있으며미셀구조를이룰수 있다. 이러한미셀구조를통해소수성약물을봉입할수 있는약물전달체로사용될수 있으며, 특히본 발명에따른양친매성제미니고분자화합물을함유한약물전달체는디설파이드결합의티올반응성으로인해, 특정부위에서의약물전달및 방출특성을크게향상시킬수 있다.
Abstract:
The present invention relates to a polymer micelle-medicine complex based on a cellulose-graft-polylactide-based amphiphilic polymer and to a method for producing the same. More specifically, the polymer micelle-medicine complex includes an amphiphilic copolymer having a hydrophilic block including cellulose and a hydrophobic block including polylactide and is formed in a core-shell structure consisting of a hydrophobic core unit and a hydrophilic shell unit. Prednisolone acetate which is a refractory drug is encapsulated in the core unit of the core-shell structure so as to constitute the polymer micelle-medicine complex. The polymer micelle-medicine complex according to the present invention effectively solubilizes the refractory drug and changes the molecular variants of the amphiphilic copolymer so that a micelle having improved stability is produced. Accordingly, the encapsulation efficiency of the refractory drug is maximized and releasing behavior can be easily controlled.
Abstract:
The present invention relates to a device for forming homogeneous monomer droplets and, more specifically, to a device for forming homogeneous monomer droplets, which forms droplets with uniform shapes for making polymer particles in a bead type such as polystyrene beads, thereby improving uniformity in shapes and sizes of polymer beads. According to the present invention, the device collects a monomer solution with low viscosity at one point using a distribution plate and separately transfers the collected monomer solution to each droplet hole formed at a multi-hole distribution plate when the monomer solution is transferred, thereby forming monomer droplets with improved uniformity.
Abstract:
PURPOSE: A core cross-linked polymer micelle composition is provided to improve biostability, to minimize side effect due to toxicity of chemicals, and to be used as a drug carrier. CONSTITUTION: A core cross-linked polymer micelle composition is represented by chemical formula 1. In the chemical formula 1, P is an aqueous polymer, X is a fat-soluble polymer, Y is a connection ring, and Z is polycysteine with 3-20 cysteine. The aqueous polymer P is one or more linear, block, graft, or dendrimer polymer selected form polyethylene glycol, polyvinylpyrrolidone, and poly[N-2-(hydroxypropyl)methacrylamide]. The molecular weight of the aqueous polymer P is 500-20,000 Dalton.
Abstract:
PURPOSE: A magnetic nanoparticles which are surface modified with phosphocholine, a formation method thereof, and a protein isolation method using thereof are provided to simplify isolating process in order to easily isolate using magnetic nano particles which is surface modified with the choline phosphate and a magnet. CONSTITUTION: A magnetic nanoparticles which are surface modified with phosphocholine comprises magnetic nano particles and materials having choline phosphate group. The choline phosphate is combined with magnetic nano particle surface and is exposed. A formation method of material having choline phosphate comprises a step of radical polymerizing monomers having choline phosphate groups which is represented by the following structural formula at surfaces of the magnetic nano particles. The structural formula 1 is Choline phosphate -X-R. A isolation method of C-reactive protein comprises next steps: adding magnetic nanoparticles which are surface modified with choline phosphate to sample solution containing the C-reactive protein; forming a complex of the C-reactive proteins and magnetic nano particles; isolating the composite from the sample solution by using the magnet; and isolating the C-reactive protein from the isolated composite by using a dissociating agent.
Abstract:
PURPOSE: An organic dye and a dye-sensitized solar battery using thereof are provided to improve phosphor conversion efficiency of the dye-sensitized solar cell, thereby enhancing optical absorption rate and quantum efficiency. CONSTITUTION: An organic dye is represented by chemical formula 1. Here, x1 and X2 are respectively selected from S or O, and Y1 and Y2 are respectively selected from hydrogen, halogen, alkyl, alkoxy, heteroalkyl, nitro, acyl, substituted or non-substituted amino group, substituted or non-substituted aryl group, and substituted or non-substituted heteroaryl group. R1 and R2 are respectively selected from C1-30 alkyl group, substituted or non-substituted C1-30 heteroalkyl group, substituted or non-substituted C1-30 alkoxy radical, substituted or non-substituted C1-30 hetero alkoxy radical, substituted or non-substituted aryl group, and substituted or non-substituted heteroaryl group. Z is selected from substituted or non-substituted aromatic hydrocarbon group, substituted or non-substituted heterocyclic group, vinyl group, and substituted or non-substituted polyvinyl.