Ground and excited state dipole moments of 1-methylindole from thermochromic shifts in absorption and emission spectra

Reducing the internal reorganization energy via symmetry controlled π-electron delocalization

“…[39][40][41] Similar principles have been extended and applied to other types of compounds, but the discussions are largely limited to cyclic systems. [42][43][44][45][46][47][48] Empirical design principles correlating the molecular geometry and the electronic structure characteristics in terms of the reorganization energy for linear molecules or organic intramolecular charge transfer type systems are relatively scarce, especially for realistic chromophores with application potentials beyond simple model systems.…”