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9‐Benzylidene‐9H‐fluorene Derivatives Linked to Monoaza‐15‐crown‐5: Synthesis and Metal Ion Sensing |
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| Authors: | Jing Cao Yang Li Junxiang Feng |
| Institution: | 1. College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China;2. Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China |
| Abstract: | Two kinds of novel styryl chemosensory 2‐FMNC and 3‐FMNC, were designed and synthesized by an apporiate introduction of 9‐benzylidene‐9H‐fluorene group as fluorophore with the aim at avoiding photoisomerisation. These 9‐benzylidene‐9H‐fluorene derivatives showed the similar selectivity and sensitivity upon addition of metal ions. The sensitivity of FMNC to alkaline earth metal ions was Ba2+>Sr2+>Ca2+≈Mg2+. |
| Keywords: | 15‐aza‐5‐crown ether 9‐benzylidene‐9H‐fluorene alkaline earth metal ion |