Figure 4.

(A) Hydrodynamic diameters of the PMOs, PMOs-DOX@WQDs. (B) Hydrodynamic size of PMOs-DOX@WQDs dispersed in different solutions for 5 days. Inset of (B) The photograph of PMOs dispersed in water, PBS, and DMEM. (C) Zeta potentials of PMOs, PMOs-DOX, WQDs, and PMO-DOX@WQDs. (D) UV-vis absorption spectra of DOX, PMOs, PMOs-DOX, WQDs, and PMOs-DOX@WQDs nanoparticles.

Abbreviations: DMEM, Dulbecco’s Modified Eagle’s Medium; DOX, doxorubicin; PMOs, periodic mesoporous organosilicas; WQDs, WS₂ quantum dots.