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Synthesis And Characterization Of Novel Biodegradable And Electroactive Hydrogel Based On Aniline Oligomer And Gelatin.

Yadong Liu, Jun Hu, Xiuli Zhuang, Peibiao Zhang, Yen Wei, Xianhong Wang, X. Chen
Published 2012 · Chemistry, Medicine

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A biodegradable electroactive hydrogel (AP-g-GA), aniline pentamer (AP) grafting gelatin (GA), is synthesized by a coupling reaction between the carboxyl group of AP and the amino side group of GA in aqueous solution. The electroactivity of the physical hydrogel is confirmed by UV-vis and CV. The hydrophobic AP changes the hydrogel's porous structure of the natural GA and the gel-time, which is confirmed by the rheological behavior of the AP-g-GA and GA. With an increase in the content of AP, the hydrogel gradually forms a porous structure, from "honeycomb" to "bamboo raft". The porous scaffolds can be crosslinked with 3.5% EDC in 90% ethanol. MTT assays show that the AP-g-GA exhibits reduced cytotoxicity compared to EM AP due to the introduction of the biocompatible GA moiety. The in vitro cell cultures suggest that the AP-g-GA#1 (with 1.9% AP) shows the best biocompatibility and cell adhesion ability.
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