Very high cyclization quantum yields of diarylethene having two N-methylpyridinium ions

Dithienylethenes having a pyridinium cation at one and both thiophene rings were synthesized. The derivatives with two pyridinium cation showed the cyclization quantum yield as high as 0.71, which is much larger than the values of the monocation derivative and the neutral form. This can be explained...

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Bibliographic Details
Published inChemistry letters Vol. 32; no. 12; pp. 1178 - 1179
Main Authors Matsuda, K, Shinkai, Y, Yamaguchi, T, Nomiyama, K, Isayama, M, Irie, M
Format Journal Article
LanguageEnglish
Published TOKYO Chemical Soc Japan 05.12.2003
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Summary:Dithienylethenes having a pyridinium cation at one and both thiophene rings were synthesized. The derivatives with two pyridinium cation showed the cyclization quantum yield as high as 0.71, which is much larger than the values of the monocation derivative and the neutral form. This can be explained by the conformation of the open-ring isomer of the diarylethenes.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.2003.1178