Chemical redox-induced chiroptical switching of supramolecular assemblies of viologens.

ABSTRACT: A chiral supramolecular assembly exhibiting redox-induced changes in its chiroptical properties was prepared using viologen-modified glutamide (G-V²⁺) derivatives. Achiral viologen moieties in the G-V²⁺ assembly were chirally orientated by glutamide groups, affording a unique orange-colored solution, with a visible absorption band at around 470 nm, having electronic circular dichroism (CD) signals (molar ellipticity [θ] = 0.58 × 10⁵ deg cm² dmol^-1: absorption dissymmetry factors (g) = 5.2 × 10^-3 at 512 nm). The G-V²⁺ could be reduced to its cation radical (G-V⁺˙) but retains its chiral assembly. After chemical reduction, the color change from orange to blueish v

SUBMITTER: Kuwahara Y 

PROVIDER: S-EPMC8979179 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature