Dendritic incorporation of quinacridone: solubility, aggregation, electrochemistry, and solid-state luminescence

Abstract

The first incorporation of quinacridone, a technologically important organic electroluminescent emitter, into dendrimers increases solubility, decreases aggregation, retards heterogeneous electron transfer, and enhances luminescence in condensed phases (powders and thin films).

Dimeric quinacridone cyclophanes: Synthesis, structures, and photophysical properties

“…The aggregation of QA dyes has been the subject of numerous studies and much effort has been invested in the optimization of QA structures in terms of their efficiency [16]. Along this line, we have carried out studies aimed at understanding how supramolecular structures affect the luminescent properties of quinacridone derivatives [17][18][19][20][21].…”

Structure-fluorescence relationship: interplay of non-covalent interactions in homologous 1,3,5-triaryl-2-pyrazolines

“…[8][9][10] To diminish this drawback, small structural modifications in fluorescent molecules have been found to be valuable and effective. [11][12][13] For example, the introduction of an ethyl group on the conjugated backbone of diphenylbutadiene 11 and incorporation of a quinacridone dye molecule into dendrimers 12 led to an enhanced emission intensity owing to the decrease in molecular aggregation. In addition to their use in OELDs, organic fluorescent compounds have also been found to be useful in cosmetics, surface coatings, inks and textile industries.…”

Theoretical study on charge transport of quinacridone polymorphs

“…1) and its derivatives are widely used organic pigments that display excellent fastness properties as well as pronounced photovoltaic and photoconductive activities1–4. Some studies on QA have been devoted to investigate the assembly and structure properties of this class of pigments5–13. Moreover, high‐photoluminescent efficiency in dilute solution combined with good electrochemical stability in the solid state has allowed the fabrication of high‐performance organic electroluminescent devices (OLEDs) based on QA14, 15.…”