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. 2017 Oct 27;15:76. doi: 10.1186/s12951-017-0309-y

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© The Author(s) 2017

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — FTIR spectra (A) of (a) Fe₃O₄, (b) APTES-modified Fe₃O₄, (c) Fe₃O₄@CPABD, (d) Fe₃O₄-g-PAA and (e) Fe₃O₄-g-PAA-b-PMAEFC, and ¹H NMR spectra of B Fe₃O₄-g-PMAA (DMSO-d ₆) and C Fe₃O₄-g-PAA-b-PMAEFC (DMSO-d ₆), and D XRD patterns of (a) Fe₃O₄, (b) APTES-modified Fe₃O₄ and (c) Fe₃O₄-g-PAA-b-PMAEFC at 25 °C using DMSO-d ₆ as solvents