Introduction of asymmetry into a supramolecular system via external chiral stimuli can contribute to the understanding of the intriguing homochirality found in nature. Circularly polarized light (CPL) is regarded as a chiral physical force with right- or left-handedness. It can induce and modulate supramolecular chirality due to preferential interaction with one enantiomer. Herein, this review focuses on the photon-to-matter chirality transfer mechanisms at the supramolecular level. Thus, asymmetric photochemical reactions are reviewed, and the creation of a chiral bias upon CPL irradiation is discussed. Furthermore, the possible mechanisms for the amplification and propagation of the bias into the supramolecular level are outlined based on the nature of the photochromic building block. Representative examples, including azobenzene derivatives, polydiacetylene, bicyclic ketone, polyfluorenes, Cn-symmetric molecules, and inorganic nanomaterials, are presented.
|Journal||Macromolecular rapid communications|
|Publication status||Published - 2022 Jan|
Bibliographical noteFunding Information:
J.S.K. and N.K. contributed equally to this work. This work was supported by the National Research Foundation of Korea (NRF‐2018R1A5A1025208).
© 2021 Wiley-VCH GmbH
All Science Journal Classification (ASJC) codes
- Polymers and Plastics
- Organic Chemistry
- Materials Chemistry