Synthesis and Photophysical Properties of α-( N -Biphenyl)-Substituted 2,2'-Bipyridine-Based Push-Pull Fluorophores.
Ekaterina S StarnovskayaDmitry S KopchukAlbert F KhasanovOlga S TaniyaIgor L NikonovMaria I ValievaDmitry E PavlyukKonstantin Yu ZhizhinGrigory V ZyryanovOleg N ChupakhinPublished in: Molecules (Basel, Switzerland) (2022)
A series of new α-( N -biphenyl)-substituted 2,2'-bipyridines were obtained through the combination of the ipso-nucleophilic aromatic substitution of the C5-cyano group, aza-Diels-Alder and Suzuki cross-coupling reactions, starting from 5-cyano-1,2,4-triazines. For the obtained compounds, photophysical and fluorosolvatochromic properties were studied. Fluorophores 3l and 3b demonstrated unexpected AIEE activity, while 3a and 3h showed promising nitroexplosive detection abilities.