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. Author manuscript; available in PMC: 2017 May 25.
Published in final edited form as: ACS Appl Mater Interfaces. 2016 May 16;8(20):12711–12719. doi: 10.1021/acsami.6b03505

Figure 2.

Figure 2

Synthesis of pH-responsive additive (pH-ADT) and iron oxide nanocubes (IONCs) and their physicochemical characterization. (a) Chemical synthetic route for pH-ADT [octadecylamine–poly(API-L-Asp)10]. (b) 1H NMR analysis of pH-ADT in DMSO-d6. (c) Light transmittance of pH-ADT solution as a function of pH value. (Inset) Data for turbidity difference of pH-ADT solution at pH 6.5 (%T ≈ 97) and 7.4 (%T ≈ 4). (d) TEM image of iron oxide nanocubes (scale bar 50 nm). (e) Field-dependent magnetization curves of IONCs at 300 K.