科研之友
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摘要
A new anthracene-appended benzimidazolium-based receptor 1 has been designed and synthesised. The receptor shows selective recognition of iodide in the excited state by exhibiting quenching of emission of anthracene. In the ground state, receptor 1 shows different selectivity and prefers to bind bromide with higher binding constant value as established from NMR titration experiment. Other anions in the study indicated weak or no interaction. Hydrogen bonding and charge-charge interactions are the forces responsible for strong binding. The interaction properties of the new receptor were evaluated by 1H NMR, UV-vis and fluorescence spectroscopic methods.
- 出版日期2010
