Abstract
In this study, synthesis of a novel biocompatible stimuli-responsive conducting hydrogel based on agarose/alginate-aniline tetramer with the capability of a tailored electrically controlled drug-release for neuroregeneration is investigated. First, aniline tetramer is synthesized and grafted onto sodium alginate. Then, this material is added to agarose as an electrical conductivity modifier to obtain Agarose/alginate-aniline tetramer hydrogel. The synthesized materials are characterized by H NMR and FTIR. The hydrogels are prepared with varying content of aniline tetramer and their swelling–deswelling and shape memory behavior is evaluated. The electroactivity and ionic conductivity of hydrogels against temperature is measured. The sample with 10% aniline tetramer (AT10) reveals the highest ionic conductivity. In MTT and SEM assays, AT10 shows the best cell viability and cell proliferation due to its highest ionic conductivity highlighting the fact that electrical stimuli cell signaling. Hydrogels also represent great potentials for passive and electro-stimulated dexamethasone release. These results demonstrate that the newly developed conducting hydrogels are promising materials for neuroregenerative medicine.
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