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RDFs of (A) chain AAs and (B) salt cations around the NP surface ( = −60 mC/m2) at pH 5.25. (C) represents the AA density as a function of salt cation density. Monovalent, divalent, or trivalent salts (ionic strength 1 × 10−4 M) are considered. Dotted lines represent the NP radius (100 Å).
