作者:Yohei Takahashi、Masatoshi Endo、Kazuaki Ito
DOI:10.1007/s10847-013-0349-3
日期:2014.6
The synthesis, characterization and binding studies with anions for biaryl-based anion receptors bearing thiourea groups have been described. The results revealed that receptors (1 and 2) showed good selectivity and binding affinity for F−, and among them binaphthyl-based receptor (1a) showed the best binding affinity for F− in comparison to other tested anions (Cl−, Br−, I−, $$ \textNO}}_3}^ - } ,\;\textHSO}}_4}^ - } , $$ AcO− and $$ \textH}}_2} \textPO}}_4}^ - } $$ ). This is probably due to the fact that the moderate rigidity of binaphthyl skeleton in 1a is able to provide the better geometry of two thiourea groups for incorporating F− into the binding pocket. The higher basicity of F− also participated in this selectivity.
本研究描述了带有硫脲基团的双芳基阴离子受体的合成、表征和与阴离子的结合研究。结果表明,受体(1 和 2)对 F- 具有良好的选择性和结合亲和力,其中双萘基受体(1a)与其他测试阴离子(Cl-、Br-、I-、$$ \textNO}}_3}^ - })相比,对 F- 的结合亲和力最好。, \;textHSO}}_4}^ - }$$ AcO- 和 $$ \H}}_2}\textPO}}_4}^ - }.$$ ).这可能是由于 1a 中二萘基骨架的硬度适中,能够为两个硫脲基团提供更好的几何形状,从而将 F- 结合到结合袋中。F- 较高的碱性也参与了这种选择性。