Perylene Bisimide-Based Donor-Acceptor Materials Incorporating Oligothiophenes: Synthesis, Characterization, Thin-Film Properties, and Nanomorphology

作者：Nakabayashi Kazuhiro^*; Takeuchi Yuhei; Mori Hideharu

来源：Bulletin of the Chemical Society of Japan, 2016, 89(9): 1063-1068.

DOI：10.1246/bcsj.20160178

We developed a series of perylene bisimide (PBI)-based small molecules with donor-acceptor (D-A) architecture (PBI1, PBI2, and PBI3). By tuning the D-A architecture, intramolecular charge transfer (ICT) could be controlled; as a result, optical band gaps and HOMO levels of PBI1-3 were widely tunable from 1.83 to 1.44 eV and from -5.85 to -5.55 eV, respectively. Furthermore, extremely wide light absorption over 900 nm was observed in the thermal annealed PBI1-3 blend film. The grazing incidence wide angle X-ray scattering (GIWAXS) analysis demonstrated that the as-spun PBI2 thin film had the highest ordered nanostructure among PBI1-3, in which diffraction corresponding to pi-pi stacking was clearly observed in isotropic orientations.

• 出版日期2016-9-15