Controllable chiral inversion via thioether bond-activated J - and H -aggregation transformation.

Herein, thioether bonds in the peripheral groups of chiral dendrimer that could activate the transformation between - and -aggregation in π-systems and caused controllable chiral inversion are described. Furthermore, owing to the close-knit per-aggregation of dendrimers impeding the transfer of inherent molecular chirality, the inversed chirality could be memorized and transferred from oligomers to nano-helices during self-assembly.