Tuning crystallinity of salicylideneaniline derivatives by increase of aromatic rings

摘要

Schiff base compounds with chromophore show aggregation induced emissions (AIEs)1) and solid-state photochromism/thermochromism2). These molecules are closely packed by π-π interaction between chromophores both in solution and in solid states. On the other hand, some groups reported on the cold crystallization behavior of Schiff base compounds3, 4). K. Iwase et al. proposed the tuning flexibility in the molecular structure for the control of such non-equilibrium thermal behavior.3)