Figure 6. Interactions of ultrasmall MoS₂ quantum dots with Aβ oligomers.

Ultrasmall MoS₂ QDs were added to preformed Aβ tetramers with molar ratios Aβ:MoS₂=4:4 (A, C, E) and Aβ:MoS₂=4:8 (B, D, F). (A, B) Radial distribution functions of Aβ and MoS₂ atoms from the center of mass of the cluster. (C, D) Number of ultrasmall MoS₂ QDs bound on Aβ tetramers after simulations reached steady state. (E, F) Typical testudo-like Aβ-o-MoS₂ complex formations, where ultrasmall MoS₂ QDs in the exterior shielded Aβ-o in the interior. Ultrasmall MoS₂ QDs are shown as sticks and colored by elements. Aβ peptides are shown as cartoons and colored by chains with N-termini indicated by spheres and β-sheet structures highlighted in red.