A switching sensor of CH bond breakage/formation regulated by mediating copper (II)’s complexation

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• 作者：Xue Zhou^a ; ^bAuthor Vitae ; Gang Li^a ; ^bAuthor Vitae ; Peng Yang^a ; ^b ; ^{pengyangcn05@hotmail.com}Author Vitae ; Liang Zhao^a ; ^bAuthor Vitae ; Tuo Deng^a ; ^bAuthor Vitae ; Hongyan Shen^a ; ^bAuthor Vitae ; Zhaozheng Yang^a ; ^bAuthor Vitae ; Zhangmin Tian^a ; ^bAuthor Vitae ; Yan Chen^a ; ^bAuthor Vitae
• 关键词：Calixarene ; Carbazole ; Copper ; Sensor ; UV&ndash ; vis spectra
• 刊名：Sensors and Actuators B: Chemical
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：242
• 期：Complete
• 页码：56-62
• 全文大小：2030 K
• 卷排序：242

文摘

A novel carbazolyl calixarene (calix[3]dimethoxycarbazole, 2) has been successfully synthesized. This macrocycle exhibits highly selective colorimetric signal towards Cu2+ over the other tested metal ions, due to the formation of the carbocationic intermediate. The above “on” colorimetric signal could be “turned off” via disassociating the 2-Cu2+ complexation and, the signal is “turned on” again once the 2-Cu2+ complexation recovers. The above “on-off-on” switch could be reversibly managed up to 6 cycles, so that 2 could serve as a switching Cu2+ sensor.