New cyanopyridone-based unsymmetrical dyads: the effect of donor strength on their optoelectronic properties

Abstract

Here, we deliberated the effect of donor strength on the electro-optical properties of D–A–D′ configured new cyanopyridone dyads by means of detailed experimental and theoretical studies.

Utilization of newly configured carbazole-cyanopyridone structural hybrids towards achieving high-performance cyan fluorescent organic light-emitting diodes

“…Additionally, carbazole, an aromatic and inexpensive starting material with multiple linkage positions on the ring, can bring about a high quantum yield and good thermal, photochemical, and morphological stability for its derivatives. [33][34][35][36] Furthermore, we have selected an electron-deficient n-type nitrogen-based heterocyclic cyanopyridone moiety as an electron acceptor in the present design because of its thermal stability and variable optical and optoelectronic properties. As the pyridine ring is a highly electron-withdrawing scaffold, introducing it into the D-A architecture causes enhanced electron transporting ability and optical properties.…”

Effect of a Substituent in the Fourth Position on the Optical Properties of 2-Oxonicotinonitriles

“…The pyridone fragment, in particular, the 2-oxonicotinonitrile one, causes the appearance of fluorescent properties in the molecule [25][26][27][28][29][30][31][32][33][34][35][36]. However, there is practically no information in the literature on the systematic study of the effect of an individual substituent on the photophysical properties of such compounds, despite the fact that the optical properties can be finely tuned by introducing individual functional groups.…”