Synthesis and fluorescence properties of carbazole and fluorene-based compounds

Ternary thiophene–X–thiophene semiconductor building blocks (X=fluorene, carbazole, phenothiazine): Modulating electronic properties and electropolymerization ability by tuning the X core

“…QY measurements show the highest value for F 1 monomer, characterised by a rigid highly planar structure; consistently, systems like fluorene are widely used as emitters for OLED applications [66,67]. Excited state C 1 structure is very similar to F 1 (Figure 3), but the QY is about the half, probably due to the presence of heteroatom; C' 1 shows a QY about one tenth of C 1 one because the LUMO state is not completely rigid, and the thienyl units are free to rotate, thus increasing the non-radiative decay constant (k nr ) (vide supra).…”

Photo-induced proton transfer in fluorene- and carbazole-based compounds as red- and orange-light-emitting molecules: A TD-DFT study

“…Extensive investigations have exposed that conjugated organic nanomaterials show a wide variety of interesting electrical, optical, photoelectric, and magnetic properties in the solid states [29][30][31]. The fluorene and carbazole molecules are composed of a biphenyl unit bridged with a methylene and NH unit at the 9 position, respectively.…”

Synthesis and Solvatofluorochromism Behaviors on Intramolecular Charge Transfer System of Novel D-π-A Dyes

“…Cabazole derivative (1), namely 4-(9H-carbazol-9-yl)benzaldehyde, was easily synthesized by the reported procedure [17][18][19]. The designed novel D-π -A dyes (2)(3)(4) were synthesized by the onestep condensation of 4-(9H-carbazol-9-yl)benzaldehyde as a electron-donating unit with malononitrile for 2, 1-indanone for 3, and 1,3-indanedione for 4 as a electron-withdrawing unit, respectively.…”