The sodium and europium cryptates of the new macrobicyclic ligands 2 and 3 incorporating the 2,2′-bipyri dine 1,1′-dioxide and 3,3′-biisoquinoline 2,2′-dioxide units, respectively, have been prepared. The EuIII complexes present characteristic 1H-NMR spectra, showing large shifts, and are strongly luminescent in aqueous solution. These markedly improved luminescent properties, compared to the europium
已经制备了分别结合有
2,2'-联吡啶二胺1,1'-二氧化物和3,3'-二
异喹啉2,2'-二氧化物单元的新的大双环
配体2和3的钠盐和euro盐。Eu III配合物具有特征性的1 H-NMR光谱,显示出较大的位移,并且在
水溶液中强烈发光。与母体大双环
配体1的穴相比,这些显着改善的发光性质可以至少部分归因于通过N-氧化物位点更好地屏蔽了结合的阳离子。