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. 2019 Aug 6;9(8):1131. doi: 10.3390/nano9081131

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© 2019 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 (http://creativecommons.org/licenses/by/4.0/).

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(A) UV-vis absorption spectra of GNR, PEG-GNR, NH₂-GNR, PAA-GNR and BSA-GNR indicate typical transverse and longitudinal peaks of the nanorods. (B) Zeta potential of GNR of different surface modifications; GNR, PEG-GNR, NH₂-GNR, PAA-GNR and BSA-GNR. (C) TEM image of PEG-GNR. (D) TEM image of NH₂-GNR. (E) TEM image of PAA-GNR. (F) TEM image of BSA-GNR.