359863-61-9

Upstream product

• 559-40-0 octaperfluorocyclopentene 
• 459424-50-1 3-bromo-2-methoxy-5-phenylthiophene 
• 77133-30-3 2-methoxy-3,5-dibromothiophene 
• 591-50-4 iodobenzene 

Relevant academic research and scientific papers

Substituent effect of diarylethenes on IR spectra for application of non-destructive readout of photochromic recording

Photochromic diarylethene derivatives, 1,2-bis(2-methyl-5-phenyl-3-thienyl) perfluorocyclopentene (1), 1,2-bis(2,4-dimethyl-5-phenyl-3-thienyl) perfluorocyclopentene (2), and 1,2-bis(2-methoxy-5-phenyl-3-thienyl) perfluorocyclopentene (3) were prepared to study substituent effects on IR spectra. The origin of the change of IR spectra due to the substituents may be categorized into (1) change in structure, (2) change in charge distribution, and (3) new normal modes due to the newly introduced substituent, which was examined by ab initio quantum chemical calculations. Comparisons between the experimental and computational IR spectra clarified the difference of the substituent effects between open- and closed-ring isomers. Such understanding should be useful for designing diarylethene derivatives in use for non-destructive readout by IR light. Copyright

PHOTOCHROMIC MATERIAL

A photochromic material having a ring opening quantum yield of 10-3 or lower which does not fade under ambient light is provided. The material comprises a compound belonging to the diheteroarylethene class. The compound has alkoxy group and ary

Extraordinarily low cycloreversion quantum yields of photochromic diarylethenes with methoxy substituents

Diarylperfluorocyclopentenes having 2-methoxy-5-phenylthiophene as the aryl groups were synthesized. Introduction of two methoxy substituents instead of methyl groups at the reactive carbons of 1,2-bis(5-phenyl-3-thienyl)perfluorocyclopentene decreased the photocyclorever-sion quantum yield by a factor of 103, while the cyclization quantum yield was similar.