Difluorobenzimidazole-decorated helical perylene diimide dimers for high-performance n-type organic field-effect transistors

Abstract

The vinylene-bridged helical PDI dimer (PDI2) and derivatives, have manifested great promise for applications in organic photovoltaics (OPVs). However, their performances in organic field-effect transistors (OFETs) have been somewhat overlooked...

Ring Fusion Elevates the Electronic Mobility of Azabenzannulated Perylene Diimide

“…According to this equation E LUMO =−( E red − E Fc+ +4.8) eV, the lowest unoccupied molecular orbital (LUMO) energy levels of compounds 2 and 4 were calculated to be −3.74 and −3.79 eV, respectively. The low‐lying LUMO energy levels suggest the potential applications of compounds 2 and 4 in n‐type OFETs [51,52] . Furthermore, the highest unoccupied molecular orbital (HOMO) energy levels were deduced from the LUMO energy level and optical bandgaps (Table 1).…”

“…The lowlying LUMO energy levels suggest the potential applications of compounds 2 and 4 in n-type OFETs. [51,52] Furthermore, the highest unoccupied molecular orbital (HOMO) energy levels were deduced from the LUMO energy level and optical bandgaps (Table 1). As a result of ring fusion, the HOMO energy level of compound 4 was 0.15 eV higher than that of compound 2, which were À 6.07 and À 6.22 eV, respectively.…”

Perylene-diimide for organic solar cells: current scenario and prospects in molecular geometric, functionalization, and optoelectronic properties

“…[141][142][143] To enhance stacking and/or prevent severe aggregation, several linkers were synthesized between the dimers of PDI in the small molecules based on PDI. [144][145][146] It is common practice to bind a large number of PDIs together using electron-rich linkers to construct a twisted acceptordonor-acceptor (A-D-A) molecule, which is done to increase the device's overall efficiency. Using molecular features, such as bonding, lms can be designed and made with different structures.…”