A blue 4′,7-diaminoflavylium cation showing an extended pH range stability
作者:A. Tron、S. Gago、N. D. McClenaghan、A. J. Parola、F. Pina
DOI:10.1039/c6cp00890a
日期:——
positions, leads to the formation of a blue flavylium cation, 7-(N,N′-diethylamino)-2-(9-julolidine)-1-benzopyrilium, which is extremely stable across a wide acidic pH range. The kinetic and thermodynamic constants of the multistate system have been calculated by studying the relaxation kinetics after equilibrium perturbation by addition of base (direct pH jumps) or acid (reverse pH jumps). Except for the