Moore, A., Chesney, A., Bryce, M., Batsanov, A., Kelly, J., Howard, J., …Khodorkovsky, V. (2001). Synthesis, structures and nonlinear optical properties of novel D-pi-A chromophores: Intramolecular charge transfer from 1,3- dithiole or ferrocene moieties to polynitrofluorene or dicyanomethylene moieties through conjugated linkers. European Journal of Organic Chemistry, 2671-2687