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(A) TEM image (×100,000), (B) the particle size and ξ-potential, (C) the stability of prepared TP 5-NPs. TP 5-NPs had a nearly spherical shape and uniform size with a diameter of ~170 nm by TEM image. The mean particle size of TP 5-NPs was 205.4 nm and ξ potential was −23.2 mV by DLS. TP 5-NPs showed good stability within 72 h. Abbreviations: TPs-NPs, TPs-loaded nanoparticles; TEM, Transmission electron microscopy; DLS, dynamic light scattering.
