Light-Driven Controllable Cis-trans Isomerization in a Cycloparaphenylene Dimer Bridged by 9,9′-Bifluorenylidene

Key Points

• This research aims to explore light-driven isomerization mechanisms in a cycloparaphenylene dimer.
• Synthesis of a cycloparaphenylene dimer linked by 9,9'-bifluorenylidene
• Investigation of photoisomerization under light exposure
• Analysis of bidirectional photo-switching using photoacid catalysis
• Successful synthesis of stable isomers shown to undergo photoisomerization
• Demonstration of bidirectional photo-switching process
• Characterization of the effect of light on the isomerization rates