Thermally Assisted Photonic Inversion of Supramolecular Handedness

Abstract

Spiraling into control: A photoresponsive supramolecular assembly demonstrates that light, along with heating (Δ) and cooling (), can cause chiral communication between molecules. This effect leads to bias in the helicity of the complex, causing a reversible switching of macroscopic handedness, as shown by a reversal of sign of the circularly polarized luminescence (CPL) that is emitted.

Chirality control of self-assembled achiral nanofibers using amines in their solid state

“…Exposure of the fiber to chiral analytes capable of hydrogen bonding with gelator 1 facilitates stabilization of the twisted stacking arrangement of gelator 1, thereby yielding the helical form of the fiber. 20 The azobenzene moiety, in general, has been widely used as a component for a diverse range of applications, such as photoresponsive supramolecular systems. The non-helical fiber at this point can again be transformed into a helical configuration by addition of a particular analyte that may again stabilize the twisted stacking arrangement by hydrogen bonding with gelator 1.…”

Influence of Metal, Ligand and Solvent on Supramolecular Polymerizations with Transition‐Metal Compounds: A Theoretical Study

“…[9][10][11]13,14 It has been also shown that OPEs are able to selforganize into microcrystalline lamellae 20 or into micrometric-size associates 21 as well as to amplify chirality 22 or to invert supramolecular handedness. 23 Furthermore, a recent study confirmed that the interchain π-interactions in OPEs have strong impact on the photophysical properties of the self-assembled materials. 24 Pyridine-centered tridentate ligands are highly versatile building blocks that are extensively used in coordination chemistry.…”

Recent progress in research on stimuli-responsive circularly polarized luminescence based on π-conjugated molecules

“…7a) [13]. In the (E,E) forms before isomerization, (S)-and (R)-9, which formed aggregates in methylcyclohexane (1 × 10 -4 M), showed positive and negative CPL with g lum values of +0.008 and -0.01, respectively, at 503 nm (Fig.…”

“…The CPL observed in this study is associated with the respective helicity of the assembled structures. The result suggested that the assembly of the (E,E) form alone and that consisting of all the isomers exhibited opposite chirality [13].…”