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. 2020 May 29;12(6):1249. doi: 10.3390/polym12061249

Figure 3.

Figure 3

Red: pKa values for D according to the literature in aqueous media. Black: pH study and obtained pKa values for D in methanol:pH 7 buffer solution (1:1) media. Blue: pH study and obtained pKa values for the complex {(3)-Cu(II)}nDm (n:1, m:1) in methanol:pH 7 buffer solution (1:1) media.