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Rapid Commun."],"published-print":{"date-parts":[[2017,2]]},"abstract":"<jats:p>Electroactive hydrogel scaffolds are fabricated by the 3D\u2010printing technique using composites of 30% Pluronic F127 and aniline tetramer\u2010grafted\u2010polyethylenimine (AT\u2010PEI) copolymers with various contents from 2.5% to 10%. The synthesized AT\u2010PEI copolymers can self\u2010assemble into nanoparticles with the diameter of \u224850 nm and display excellent electroactivity due to AT conjugation. The copolymers are then homogeneously distributed into 30% Pluronic F127 solution by virtue of the thermosensitivity of F127, denoted as F\/AT\u2010PEI composites. Macroscopic photographs of latticed scaffolds elucidate their excellent printability of F\/AT\u2010PEI hydrogels for the 3D\u2010printing technique. The conductivities of the printed F\/AT\u2010PEI scaffolds are all higher than 2.0 \u00d7 10<jats:sup>\u22123<\/jats:sup> S cm<jats:sup>\u22121<\/jats:sup>, which are significantly improved compared with that of F127 scaffold with only 0.94 \u00d7 10<jats:sup>\u22123<\/jats:sup> S cm<jats:sup>\u22121<\/jats:sup>. Thus, the F\/AT\u2010PEI scaffolds can be considered as candidates for application in electrical stimulation of tissue regeneration such as repair of muscle and cardiac nerve tissue.\n<jats:boxed-text content-type=\"graphic\" position=\"anchor\"><jats:graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" mimetype=\"image\/png\" position=\"anchor\" specific-use=\"enlarged-web-image\" xlink:href=\"graphic\/marc201600551-abs-0001-m.png\"><jats:alt-text>image<\/jats:alt-text><\/jats:graphic><\/jats:boxed-text><\/jats:p>","DOI":"10.1002\/marc.201600551","type":"journal-article","created":{"date-parts":[[2017,1,3]],"date-time":"2017-01-03T12:12:53Z","timestamp":1483445573000},"source":"Crossref","is-referenced-by-count":42,"title":["3D Printing of Aniline Tetramer\u2010Grafted\u2010Polyethylenimine and Pluronic F127 Composites for Electroactive Scaffolds"],"prefix":"10.1002","volume":"38","author":[{"given":"Shi\u2010Lei","family":"Dong","sequence":"first","affiliation":[{"name":"Beijing 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