Mechanochromic cyclodextrins.

Yuki SugitaDaisuke Aoki Masatoshi Tokita Hideyuki Otsuka

Published in: Chemical communications (Cambridge, England) (2022)

Mechanochromic cyclodextrins (MCDs) that can generate blue radical species, which are exceptionally stable toward atmospheric oxygen and can thus be quantitatively characterized via electron paramagnetic resonance (EPR) spectroscopy, were synthesized. MCDs have a defined structure that consists of a diarylbibenzofuranone skeleton mechanophore sandwiched between two CDs. Grinding tests and EPR measurements of the MCDs revealed their high mechanoresponsiveness, reflecting the inherent rigidity of the CDs and the formation of a supramolecular structure in the bulk.

Keyphrases

quantum dots
energy transfer
capillary electrophoresis
high resolution
visible light
single molecule
single cell
particulate matter
carbon dioxide