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. 2020 Jan 13;13(2):366. doi: 10.3390/ma13020366

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(A) Uptake of Pheophorbide-a (Pheo) loaded, PEO-b-PCL micelles might follow the collisional or diffusional kinetic mechanism. Which describes the free aqueous concentration of nanoparticles (NP), Pheo (PF), vesicles (V); Pheo associated to nanoparticles (PNP), vesicles (PV) and the Pheo-Nanoparticle-Vesicle complex (NP-P-V). (B) Pheo shows a different emission spectrum when present in DOPC vesicles (solid), nanoparticles (dashed) or phosphate buffered salin (PBS) (dotted), which can be used to investigate the uptake mechanisms of PEO-b-PCL micelles (reprinted from Reference [111] with permission from Elsevier).