Selective and colorimetric fluoride anion chemosensor based on s-tetrazines

  • Zhao Y
  • Li Y
  • Qin Z
 et al. 
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s-Tetrazine and their derivatives are found to be a class of selective and colorimetric chemosensors for fluoride anions. The supramolecular interaction (anion–π and charge/electron transfer) between fluoride ion and π-electron deficient tetrazines receptor could facilitate the F − –tetrazines electron transfer (ET) event that generates tetrazine˙ − radical anion. Accordingly, the color of its solution changed from red to green. Furthermore, the recognition of F − in DMSO is tolerant to water (DMSO–H 2 O = 9 : 1, v/v) and shows excellent selectivity towards other anions, especially H 2 PO 4 − and OAc − .

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  • Yingjie Zhao

  • Yongjun Li

  • Zhihong Qin

  • Runsheng Jiang

  • Huibiao Liu

  • Yuliang Li

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