Photochromic Diarylethenes with a Curved Aromatic Corannulene Unit.

ABSTRACT: We report new photochromic diarylethenes incorporating a curved aromatic corannulene unit as a side aryl group: 1-(2-methoxycorannulenyl)-2-(2-methyl-5-phenyl-3-thienyl)-perfluorocyclopentene (1) and its sulfone derivative 1-(2-methoxycorannulenyl)-2-(1,1-dioxide-2-methyl-5-phenyl-3-thienyl)-perfluorocyclopentene (2). These compounds are compared with our previously reported compound 1,2-bis-(2-methoxycorannulenyl)-perfluorocyclopentene (3). Both 1 and 2 exhibited photochromic color changes with photochemical quantum yields of 0.44 (cyclization) and 0.025 (cycloreversion) for 1 and 0.54 (cyclization) and 0.034 (cycloreversion) for 2. The open-ring isomers, 1o and 2o, displayed fluorescence at room temperature, which is attribut

SUBMITTER: Imai R 

PROVIDER: S-EPMC12593992 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature