A 基于包含有选择地察觉到 anionic 客人种类的 NH 有约束力的地点的双能力的新比色的识别受体 1 被综合了。与另外的卤化物阴离子相比,它在 dimethyl sulfoxide 的 UV/Vis 吸收光谱与高选择向氟化物阴离子的存在显示出反应,并且也显示了戏剧的颜色变化从对黄无色面对 TBAF (5 ??? 搠灩票汬湩 ?汧' 兮茨Κ桪
A new colorimetric recognition receptor 1 based on the dual capability containing NH binding sites of selectively sensing anionic guest species has been synthesized. Compared with other halide anions, its UV/Vis absorption spectrum in dimethyl sulfoxide showed the response toward the presence of fluoride anion with high selectivity, and also displayed dramatic color changes from colorless to yellow in the presence of TBAF (5 × 10^-5 mol/L). The similar UV/Vis absorption spectrum change also occurred when 1 was treated with AcO^- while a little change with H2PO^-4 and OH^-. Receptor 1 has almost not affinity abilities to Cl^-, Br^- and I^-. The binding ability of receptor 1 to fluoride with high selectivity over other halides contributes to the anion size and the ability of forming hydrogen bonding. While the different ability of binding with geometrically triangular (AcO^-), tetrahedral (H2PO^-4 ) and linear (OH^-) anions maybe result from their geometry configuration.