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Microdipoles in 3 c vs 3 d interact with negatively charged membranes (HeLa, POPC : POPS). Electron delocalisation from sulfur polarizes 3 c,d dispersing negative potential over the arene and sulfur atoms. Electron‐withdrawing fluorines in 3 d further polarize the arene by dispersing negative potential to the circumference, localising positive potential at the arene centre, and enhancing electrostatic interactions with negative charged membranes.
