DIPEA catalyzed step-by-step synthesis and photophysical properties of thieno[2,3-b]pyridine derivatives

Tunable full-color emission of stilbazoles containing a 2-halo-3,4-dicyanopyridine acceptor

“…The mobile halogen atom and two reactive cyano groups will allow a facile modification of the acceptor unit of chromophores by the introduction of the desired moieties. [51][52][53][54][55][56][57][58][59]…”

Dual-State Emission of 2-(Butylamino)Cinchomeronic Dinitrile Derivatives

“…Over the past decade, there has been an exponential increase in the number of publications about the synthetic approaches to compounds showing dual-state emission (DSE) [ 1 , 2 , 3 , 4 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 ]. This is due to the fact that DSE molecules are more versatile and are therefore intended for a wider range of applications.…”

“…Previously, we reported that compounds with cinchomeronic dinitrile fragments exhibited fluorescence both in solutions and in solid state [ 39 , 40 , 41 , 42 , 43 ]. For example, sulfur-containing cinchomeronic dinitrile derivatives (ethyl 2-((3,4-dicyanopyridine-2-yl)thio)acetates) showed blue fluorescence in organic solvents and a green emission in powders [ 39 ]. Compounds such as 2-diethylaminocinchomeronic dinitriles were strongly emissive in the solid state and in nonpolar solvents, with fluorescence quantum yields up to 59% [ 40 ].…”