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. 2021 Jun 10;11(6):1532. doi: 10.3390/nano11061532

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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(a–d). FTIR spectra of (a) MCP, (b) mPEG-amine10K, (c) MCP-PEG10K and (d) MCP-PEG10K2. For a list of the characteristic FTIR absorption bands and their assignment please see supplement Tables S4–S7.