No abstract

The occurrence and transmission of chirality is af ascinating characteristic of nature.H owever,t he intermolecular transmission efficiency of circularly polarized luminescence (CPL) remains challenging due to poor throughspace energy transfer.W er eport au nique CPL transmission from inducing the achiral acceptor to emit CPL within as pecific liquid crystal (LC)-based intermolecular system through ac ircularly polarized fluorescence resonance energy transfer (C-FRET), wherein the luminescent cholesteric LC is employed as the chirality donor,a nd rationally designed achiral long-wavelength aggregation-induced emission (AIE) fluorophore acts as the well-assembled acceptor.Incontrast to photon-release-and-absorption, the chirality transmission channel of C-FRET is highly dependent upon the energy resonance in the highly intrinsic chiral assembly of cholesteric LC,a sv erified by deliberately separating the achiral acceptor from the chiral donor to keep it far beyond the resonance distance.T his C-FRET mode provides ad enovos trategy concept for high-level information processing for applications such as high-density data storage,c ombinatorial logic calculation, and multilevel data encryption and decryption.

Dynamic modulation of soft helix in terms of the molecular organization, handedness, and pitch length could result in a sophisticated control over its functions, opening numerous possibilities toward the exploration of previously unidentified applications. Here, we report a dynamic and reversible transformation of a soft helical superstructure among the helicoidal (molecules orthogonal to helical axis), heliconical (molecules oblique to the helical axis, i.e., oblique helicoidal), and their inverse helices, together with a tunability on the helical pitch, by combining electrical and optical manipulations. This multistate transformation depends on a matching of the temperature, the strength of external stimuli, and the bend and twist elastic effects of the system. A laser emission with tunable wavelength and polarization, and prescribed micropatterns formed by any aforementioned architectures were achieved.