An investigation of the deprotonation of hydrazone-based receptors on interaction with anion: develop a colorimetric system distinguishing cyanide from anions |
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Authors: | Jing Cao Xiao-Meng Wang |
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Affiliation: | 1. College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, People''s Republic of China;2. Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, People''s Republic of China |
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Abstract: | Hydrazone-based receptors, containing fluorene-skeleton substituents, in a THF solution, in the presence of fluoride or cyanide, do not only form H-bond complexes, but mainly undergo deprotonation of the N–H fragments, an event, which is signaled by the color change, the ability of the deprotonation is associated with the fluorene skeleton. The deprotonation process is also reversible by the addition of metal ions, while cyanide from fluoride could be distinguished by the addition of copper (II). |
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Keywords: | Hydrazone-based receptor Fluorene-skeleton Deprotonation Reversible Color change |
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