Abstract:
The present invention relates to a biodegradable and thermosensitive poly(organophosphazene) with a functional group, a preparation method thereof, and a use thereof for delivery of bioactive substances. According to the present invention, poly(organophosphazene) is a phosphagen-based polymer showing biodegradability, thermosensitivity, and sol-gel phase transition depending on temperature change, whereby when administered into a living body with bioactive substances such as drugs, the poly(organophosphazene) forms a gel-phase at body temperature to be capable of controlled release of the bioactive substances. Further, the poly(organophosphazene) has functional groups to chemically bind with bioactive substances through an ionic bond, covalent bond, or coordinate covalent bond to be capable of a sustained release of the bioactive substances due to its good binding property. Therefore, the poly(organophosphazene) is useful as a delivery material for bioactive substances.
Abstract:
The present invention relates to a biodegradable and thermosensitive poly(organophosphazene) with a functional group, a preparation method thereof, and a use thereof for delivery of bioactive substances. According to the present invention, poly(organophosphazene) is a phosphagen-based polymer showing biodegradability, thermosensitivity, and sol-gel phase transition depending on temperature change, whereby when administered into a living body with bioactive substances such as drugs, the poly(organophosphazene) forms a gel-phase at body temperature to be capable of controlled release of the bioactive substances. Further, the poly(organophosphazene) has functional groups to chemically bind with bioactive substances through an ionic bond, covalent bond, or coordinate covalent bond to be capable of a sustained release of the bioactive substances due to its good binding property. Therefore, the poly(organophosphazene) is useful as a delivery material for bioactive substances.
Abstract:
A biodegradable and thermosensitive poly(organophosphazene) with a functional group, a preparation method thereof, and a use thereof for delivery of bioactive substances are provided.
Abstract:
The present invention relates to a poly(organophosphazene)-bioactive molecule conjugates in which biodegradable and thermosensitive poly(organophosphazene) with a functional group showing the sol-gel phase transition with change of temperature is combined with various bioactive molecules, such as drugs, a preparation method thereof, and a use thereof for delivery of bioactive molecules.
Abstract:
The present invention relates to a poly(organophosphazene)-bioactive molecule conjugates in which biodegradable and thermosensitive poly(organophosphazene) with a functional group showing the sol-gel phase transition with change of temperature is combined with various bioactive molecules, such as drugs, a preparation method thereof, and a use thereof for delivery of bioactive molecules.
Abstract:
Provided are a use of chemically-crosslinkable, poly(organophosphazene)s for biomaterials, chemically-crosslinkable poly(organophosphazene)s with a physiologically active substance covalently-bonded thereto, a use thereof for biomaterials, and a process for preparing the same. The chemical crosslinkings can be made by UV irradiation, and/or a crosslinker, and/or an additive, and/or an enzyme, and/or a mixing of at least one polymer.
Abstract:
A phosphazene-based polymer hydrogel with a chemical cross-linkings formed by radiating ultraviolet (UV) and/or mixing with cross-linking agent and/or enzyme, a method of preparing the same, and a hydrogel forming a chemical cross-linking by radiating ultraviolet and/or mixing with a cross-linking agent and/or an enzyme; where the hydrigel shows a sol-gel behavior and has an excellent solidity by containing the phosphazene-based polymer that is capable of cross-linking at a certain concentration, are provided.
Abstract:
A phosphazene-based polymer hydrogel with a chemical cross-linkings formed by radiating ultraviolet (UV) and/or mixing with cross-linking agent and/or enzyme, and a method of preparing the same are provided. The hydrogel shows a sol-gel behavior and has an excellent solidity by containing the phosphazene-based polymer that is capable of cross-linking at a certain concentration.
Abstract:
Disclosed are polyphosphazenes of Formula 1 showing a sol-gel behavior with a temperature change, a preparation method thereof, and injectable thermosensitive polyphosphazene hydrogels using the same
Abstract:
The present invention relates to novel cyclotriphosphazene derivatives represented by Formula (1) and a preparation method thereof wherein HNA is an amino acid group selected from glycine group(—NHCH2COO−), aminomalonic acid group(—NHCH(COO−)2), aspartic acid group (—NHCH(CH2COO−)COO−) and glutamic acid group (—NHCH(CH2CH2COO−)COO−), m is a repeating unit of poly(alkoxyethyleneglycol) selected from 2, 7, 12 and 16, and n is an integer representing number of alkyl carbons and selected from 0, 1, and 3.