Imide‐Fused Diazatetracenes: Synthesis, Characterization, and Application in Perovskite Solar Cells

Abstract

A series of imide‐fused diazatetracenes were synthesized via Buchwald–Hartwig C−N coupling with a highly active palladium source. The introduction of an imide segment effectively lowers the LUMO levels compared with that of unsubstituted diazatetracene. By adjusting the alkyl chains of the diazatetracenes, different solid‐state packings were achieved, resulting in distinct photoluminescent behaviors. Their electron‐transporting properties were demonstrated in the proof‐of‐concept Perovskite solar cells as electron transporting layers.

Recent progress in pyrazinacenes containing nonbenzenoid rings: synthesis, properties and applications

“…Besides, N-containing heterocycles including carbazole, 60 imidazole, 100–102 indolizine, 103 etc. 65,68,104–106 are more popular decorating units for azaacenes. For example, Liao et al 60 synthesized a series of stable and soluble carbazole-containing azaacenes ( 65a-c ) via sample condensation reactions.…”

NaCl Micro-Crystal as a Molecular Mold for Enhanced Synthesis of Planar Phenazines and Their Applications on Chemosensing and a Full-Color Fluorescent Material

“…Generally, the synthesis of multi-color fluorescent molecules is achieved by changing the substituents attached to the scaffold, while the fluorescent color is also affected by other factors, such as the polarity or acid-base properties of solvents and molecular packing . Phenazines, as a widely studied photoelectric material, have aroused widespread interest for antibiotics, organic field effect transistors, organic light-emitting diodes, photocatalysis, organic solar cells, and biochemical analysis. , There have been reports on the preparation of multi-emission series of fluorescent molecules based on the phenazine skeleton. , However, phenazines that emit blue fluorescence are rarely reported due to their large conjugated structure. The lack of blue, one of the three primary colors, limits the preparation of full emission fluorescent materials based on the phenazine skeleton.…”