The synthesis and optical properties of four new triarylboraneâdipyrromethane (TABâDPM) conjugates (3aâd) containing dual binding sites (hydrogen bond donor and Lewis acid) have been reported. The new compounds exhibit a selective fluorogenic response towards the Fâ ion. The NMR titrations show that the anions bind to the TABâDPM conjugates via the Lewis acidic triarylborane centre in preference to the hydrogen bond donor (dipyrromethane) units.
报道了四种新的三芳基
硼â二
吡咯甲烷(TABâDPM)连接物(3aâd)的合成及光学性质,这些连接物含有双结合位点(氢键供体和
路易斯酸)。新化合物对Fâ离子表现出选择性荧光反应。NMR滴定表明,阴离子更倾向于通过
路易斯酸性三芳基
硼中心与TABâDPM连接物结合,而不是与氢键供体(二
吡咯甲烷)单元结合。