| abstract |
Disclosed is a coating liquid containing one or more metal complexes selected from the group consisting of metal complexes A represented by the chemical formula 1 below, metal complexes B represented by the chemical formula 2 below and metal complexes C represented by the chemical formula 3 below. In the chemical formulae 1, 2 and 3, M represents a metal ion, and X1-X4 independently represent one of O, NH, CO2 and S. Y1-Y8 in the chemical formula 1 and Y1-Y4 in the chemical formula 3 independently represent CH or N. Z1-Z3 in the chemical formulae 2 and 3, and Z4-Z6 in the chemical formula 2 independently represent a group composed of one selected from the group consisting of O, NH and S and two selected from the group consisting of CH and N. In the chemical formulae 1, 2 and 3, L represents an axial ligand. In the chemical formulae 1, 2 and 3, k represents the valence of the metal complex, and is equal to the sum of electric charges of M, X1-X4 and L. |