作者: Samuel Guieu , Francisco Cardona , João Rocha , Artur M. S. Silva
关键词: Luminescence 、 Chemistry 、 Crystal structure 、 Fluorescence 、 Electron 、 Intramolecular force 、 Hydrogen 、 Schiff base 、 Photochemistry 、 Polar effect
摘要: A simple synthesis strategy afforded a family of hydrogen-bonded azines and Schiff-bases. Although in dilute solution these dyes are faint light emitters, all exhibit bright luminescence upon aggregation. Changing the peripheral substituents from electron donating to withdrawing allows emission fine-tuning range bluish-green orange-red. The crystal structures materials reveal that restriction intramolecular rotations is main mechanism for aggregation-induced enhancement properties.