Figure 1.

Absorption (solid lines) and emission spectra (dashed lines) of 1 (left) and 2 (right) in various solvents (hexane: black, toluene: blue, diethylether: red, DCM: green, MeCN: orange) at room temperature (λ _ex=$\lambda \genfrac{}{}{0pt}{}{\max }{\mathrm{abs}}$ ).