Spectroscopic Properties of some Hydroxylated 2-Stilbazole Derivatives

New 2-pyridone-based donor–acceptor dyes: the effect of the donor group position, type of π-linker and acid–base characteristics of the medium on the photophysical properties

“…1). 17 2-Pyridone-based fluorophores have established themselves as versatile compounds, finding utility as dyes, 18,19 metal sensors, 20,21 components of liquid crystalline materials, 22 and markers exhibiting fluorescence. 23 The incorporation of the 2-pyridone motif as an electron-withdrawing anchoring group in DSSCs has also been reported.…”

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

“…1). 19–45 This is due to the fact that the pyridine ring acts as an electron-withdrawing group in the push–pull chromophore system. 44,45 Moreover, stilbazoles are often characterized by facile preparation methods and a wide application range.…”

“…19–45 This is due to the fact that the pyridine ring acts as an electron-withdrawing group in the push–pull chromophore system. 44,45 Moreover, stilbazoles are often characterized by facile preparation methods and a wide application range. For example, they can be used as non-linear optical materials (NLO), 19–22 light-absorbing components of dye-sensitized solar cells (DSSC), 23,24 organic light emitting diodes (OLED), 25,26 memory devices, 27 materials for two-photon absorption, 28,29 chemosensors, 30–36 fluorescent label probes 37–40 and dyes, 41–43 etc .…”

“…Thus, it should be noted that a huge amount of data on the synthesis and application of various heterocyclic styryl derivatives has been collected to date. 19–45,47–50 However, stilbazoles with a nicotinonitrile fragment remain less studied, and there are also no data about azastilbenes with a dicyanopyridine fragment in the literature.…”