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Morphological analyses of pristine and cationic CNCs by TEM and AFM: Representative TEM images of (A) pristine CNCs; (B) CNC-METAC-1A; (C) CNC-METAC-1B and AFM phase images of (D) pristine CNCs, (E) CNC- METAC-2A; (F) CNC-METAC-2B. TEM and AFM images of other cationic CNCs are depicted in Figures S4 and S5.
