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The modification of tosyl-functionalized, doxorubicin-containing PNPs with amines. (a) a representative TEM image and (b) the DH distribution measured by DLS upon re-suspending the ethylamine-modified PNPs in PBS buffer (10 mM, pH 7.4, 150 mM [NaCl]). See Figs. S14–S18 in the ESI† for the data for other amine-modified materials, including expanded TEM images.
