Synthesis, photophysical characterization, and hydrogen bonding self-assembly of unsymmetrical N-pyridyl-N′-trialkoxy phenyl perylene diimides

167The synthesized the unsymmetrical N-pyridyl-N′-3,4,5-alkoxy phenyl perylene diimides (PDIs) with acceptable yield, which easily form hydrogen bonds composite with terephthalic acid by COH…N intermolecular hydrogen bonding.