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Chemical polymerization of pyrrole in the presence of L-serine or L-glutamic acid: Electrically controlled amoxicillin release from composite hydrogel

机译:L-丝氨酸或L-谷氨酸存在下吡咯的化学聚合:电控制的阿莫西林从复合水凝胶中的释放

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摘要

Polypyrrole (PPy) was chemically prepared from aqueous solutions individually containing l-serine or l-glutamic acid, with the addition of ammonium persulfate as the oxidant. The electrical, XPS and FTIR characterizations indicated that the amino acids co-doped the PPy backbone. TEM revealed that PPy presented a quasi-spherical morphology with diameters in nanometric scale. The nanostructures of PPy-glutamic acid efficiently adsorbed therapeutic doses of amoxicillin. Composite hydrogels were obtained by the entrapment of amoxicillin-loaded PPy in polyacrylamide network. The antibiotic molecules can be subsequently released (or sustained) from composite hydrogel in response to application (or removal) of electrical stimulation. This tuning release profile can lead to promising drug delivery applications such as implantable devices and iontophoretic systems. (C) 2014 Wiley Periodicals, Inc.
机译:聚吡咯(PPy)由单独含有l-丝氨酸或l-谷氨酸的水溶液化学制备,并加入过硫酸铵作为氧化剂。电学,XPS和FTIR表征表明氨基酸共掺杂了PPy主链。 TEM显示PPy呈现出具有纳米级直径的准球形形态。 PPy-谷氨酸的纳米结构有效吸收了治疗剂量的阿莫西林。复合水凝胶是通过将载有阿莫西林的PPy截留在聚丙烯酰胺网络中而获得的。随后可以响应于电刺激的施加(或去除)从复合水凝胶释放(或持续)抗生素分子。这种调节释放曲线可导致有希望的药物输送应用,例如可植入设备和离子电渗疗法系统。 (C)2014威利期刊公司

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