Very High Cyclization Quantum Yields of Diarylethene Having Two N-Methylpyridinium Ions
Very High Cyclization Quantum Yields of Diarylethene Having Two N-Methylpyridinium Ions
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DOI：
10.1246/cl.2003.1178
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发表时间：
2003-11
影响因子：
1.6
通讯作者：
K. Matsuda;Yoshihiro Shinkai;T. Yamaguchi;Kazuko Nomiyama;Munetoshi Isayama;M. Irie
中科院分区：
文献类型：
--
作者：
K. Matsuda;Yoshihiro Shinkai;T. Yamaguchi;Kazuko Nomiyama;Munetoshi Isayama;M. Irie
合成了在一个和两个噻吩环上具有吡啶阳离子的二噻吩基乙烯。具有两个吡啶阳离子的衍生物的环化量子产率高达0.71，远大于单阳离子衍生物和中性形式的值。这可以通过二芳基乙烯的开环异构体的构象来解释。
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.