Polarization-induced nanohelixes of organic cocrystals from asymmetric components with dopant-induced chirality inversion.

ABSTRACT: Supramolecular chirality is essential for the development of functional materials. In this study, we report the synthesis of twisted nanobelts based on charge-transfer (CT) complexes using self-assembly cocrystallization starting from asymmetric components. An asymmetric donor, DBCz, and a typical acceptor, tetracyanoquinodimethane, were used to construct a chiral crystal architecture. An asymmetric alignment of the donor molecules induced polar ±(102) facets that, accompanied with free-standing growth, resulted in a twisting along the b-axis due to the electrostatic repulsive interactions. Meanwhile, the alternately oriented ±(001) side-facets were responsible for the propensity of the helixes to be right-handed. Addition of a dopant significantly enhanced the twisting probability

SUBMITTER: Chen J 

PROVIDER: S-EPMC9945330 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature