Pyrene-Based Materials for Organic Electronics

Tailoring Colors by O Annulation of Polycyclic Aromatic Hydrocarbons

“…As observed with the electrochemical characterization, O cyclization greatly affects E HOMO , with the pyrano pyranyl ring inducing the greatest enhancement of the E HOMO values and thus having the greatest impact on both optical and electrochemical E g values. On the other hand, π extension of the all‐carbon aromatic units ( m= 0, n= 1 and m = n =1) affects both E HOMO and E LUMO , and ultimately triggers a decrease of the E g value, as typically observed for π‐extended PAHs 87, 88, 89. Notably, the solvent effect (toluene) on the wavelength λ for the first allowed electronic transition was also considered in the simulation (Table 4).…”

Crystal structure of 2-(4-methylbenzoyl)pyrene, C24H16O

“…In recent years, many functionalized pyrenes have been investigated and utilized as excellent materials for organic solar cells (OSCs), organic light emitting diodes (OLEDs), organic eld-e ect transistors (OFETs), etc [4,5]. However, the reported pyrene derivatives are almost 1-, or 1-, 3-, 6-, and 8-substituted pyrene-based compounds [6][7][8]. The synthesis of 2-substituted pyrene derivatives is synthetically challenging due to the presence of the nodal plane in the HOMO and LUMO, which lies perpendicular to the molecule and passes through the 2-position [9,10].…”

Crystal structure of 1-ferrocenyl-6-bromopyrene, C26H17BrFe

“…Since pyrene exhibits pure blue uorescence with high quantum yield, long uorescence lifetime, excellent thermal stability and high charge carrier mobility, it has been attracted much attention as an important organic semiconductor for the application in organic light emitting diodes (OLEDs) [5,6], organic solar cells (OSCs) [7], organic eld-e ect transistors (OFETs) [8], etc. To this purpose, e orts have been made in order to enhance the electronic and optical properties of pyrene derivatives by modifying its molecular structure.…”