Distortion-Controlled Thermal Stability in Phenanthrene-Bridged Diarylethene Photoswitches

Key Points

• This research aims to explore how geometric and electronic changes affect the photochromic switching of chiral dithienylethene compounds.
• Developed four fused phenanthrene-based diarylethene compounds with selective fluorine substitution
• Analyzed the photochromic behavior under various geometric perturbations
• Demonstrated distinct thermal stability influenced by site-selective fluorine substitution
• Found that geometric variations significantly affect photochromic switching behavior