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Macromol Biosci. 2013 Mar;13(3):356-65. doi: 10.1002/mabi.201200345. Epub 2013 Feb 1.

Nano-hydroxyapatite surfaces grafted with electroactive aniline tetramers for bone-tissue engineering.

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  • 1Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.

Abstract

An electroactive amino/carboxyl-capped aniline tetramer (AT) is covalently grafted to the surface of hydroxyapatite (HA) nanoparticles to generate novel electroactive HA-AT nanoparticles. The amount of AT ranges from 16.5 to 34.0 wt% and is characterized by thermogravimetric analysis (TGA). The HA-AT nanoparticles are characterized by Fourier transform IR (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), X-ray diffraction, and scanning electron microscopy (SEM). For the excellent electroactivity of HA-AT, the mixture of HA-AT and PLA shows much better adhesion ability and proliferation ability than that of HA and a PLA matrix. At a 15 wt% AT grafting amount, the matrix shows the best biocompatibility.

Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

PMID:
23378280
[PubMed - indexed for MEDLINE]
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