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. 2019 Aug 13;19(16):3536. doi: 10.3390/s19163536

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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-Visible spectra of Deferoxamine (DFO) only, Fe³⁺ only, Al³⁺ only, DFO + Fe³⁺, and DFO + Al³⁺ solution in nitric acid (pH = 2). (B,C) UV-Vis spectra of SWNT/PL-PEG-DFO in the presence of (black) 0 pM, (red) 10 pM, (green) 30 pM, (blue) 50 pM, (cyan) 70 pM, and (magenta) 90 pM Fe³⁺ and Al³⁺ standard solutions, respectively. (D) The decrease in the absorption of SWNT/PL-PEG-DFOs at 270 nm as a function of the increase in the concentration of Fe³⁺ and Al³⁺. UV-Vis-NIR spectrum. Reprinted with permission from [76]. Copyright 2016 Royal Society of Chemistry.