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