Interaction studies between photochromic spiropyrans and transition metal cations: the curious case of copper
作者:Manuel Natali、Silvia Giordani
DOI:10.1039/c1ob06375h
日期:——
different substituents on the indolic nitrogen were synthesized and their capability of binding mono and bivalent transition metal cations in solution was assessed via UV-visible absorption spectroscopy. All the compounds responded selectively to the presence of Cu(ii) ions producing intense absorption bands in the visible region of their spectra. Bidimensional (1)H-NMR and MALDI-TOF MS spectroscopies revealed
合成了一系列在吲哚氮上带有不同取代基的螺吡喃,并通过紫外-可见吸收光谱法评估了它们结合溶液中单价和二价过渡金属阳离子的能力。所有化合物都对Cu(ii)离子的存在做出选择性反应,从而在其光谱的可见光区域产生强烈的吸收带。二维(1)H-NMR和MALDI-TOF MS光谱揭示了由Cu(ii)介导的SP二聚体的形成。这是在温和条件下由铜(ii)介导的交叉偶联的第一个例子,导致螺吡喃染料对称二聚。