Tuning the solid-state emission of liquid crystalline nitro-cyanostilbene by halogen bonding

Abstract

The first example of halogen-bonded fluorescent liquid crystals based on the interaction of iodofluorobenzene derivatives with nitro-cyanostilbenes is reported. The systematic variation of the fluorination degree and pattern indicates the relevance of the halogen bond strength for the induction of liquid crystalline properties. The modular self-assembly approach enables the efficient tuning of the fluorescence behaviour and mesomorphic properties of the assemblies.

Mesogens with aggregation‐induced emission properties: Materials with a bright future

“…Furthermore, bright green to yellow emission was observed for the bulk materials, which lose their emission upon heating, due to increased molecular motion. [73] The supramolecular approach combines elegantly the advantages of both, the synthetic and the doping approach by using the benefits of both. Here, complicated, timeconsuming syntheses can be avoided by using molecular recognition via noncovalent interactions, by simple mixing of the individual compounds.…”

“…Furthermore, bright green to yellow emission was observed for the bulk materials, which lose their emission upon heating, due to increased molecular motion. [ 73 ]…”