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A new heteroditopic receptor and sensor highly selective for bromide in the presence of a bound cation |
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| Authors: | Chomchai Suksai Disyaphong Jainuknan Nongnuch Muangsin Palangpol Kongsaeree |
| Affiliation: | a Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand b Department of Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand c Department of Chemistry, Faculty of Science, Prince of Songkhla University, Songkhla 90112, Thailand |
| Abstract: | The heteroditopic receptor 2 containing a crown ether and amidoferrocence groups was synthesized and the binding abilities with various anions are reported in the presence and absence of metal cations. In the presence of Na+, 2 showed positive co-operative binding towards Br− with the binding affinity Kass = 16,096 M−1. Therefore, receptor 2 showed a switched-on binding for Br− in the presence of Na+ and a switched-off binding in the absence of Na+. Compound 2 was also found to sense Cl− and Br− electrochemically. |
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