A method of making a hyperbranched amphiphilic polyester compound includes drying under vacuum a mixture of 2-(4-hydroxybutyl)-malonic acid and p-toluene sulphonic acid as catalyst. The vacuum is then released with a dry inert gas after drying. The dried mixture is heated under the inert gas at a temperature sufficient for polymerization. The inert gas is evacuated while continuing to heat the mixture. The formed polymer is then dissolved in dimethylformamide and precipitated out by adding methanol. Modifications of the method yield nanoparticles of polyesters having properties suited for coencapsulating fluorescent dyes together with therapeutic drugs, resulting in theranostic nanoparticles, that is, nanoparticles useful in both therapeutic treatments and diagnostic methods.
制备高支化两性聚酯化合物的方法包括在真空下干燥2-(
4-羟基丁基)-
丙二酸和
对甲苯磺酸作为催化剂的混合物。在干燥后释放真空,然后在惰性气体下加热混合物至足够的聚合温度。在继续加热混合物的同时,将惰性气体抽空。然后将形成的聚合物溶解在二甲基甲酰胺中,并通过添加
甲醇使其沉淀。对该方法的修改可产生具有适合于共包装荧光
染料和治疗药物的特性的聚酯纳米颗粒,从而形成治疗学纳米颗粒,即适用于治疗和诊断方法的纳米颗粒。