Tetrabenzononacene: “Butterfly Wings” Stabilize the Core
作者:Matthias Müller、Steffen Maier、Olena Tverskoy、Frank Rominger、Jan Freudenberg、Uwe H. F. Bunz
DOI:10.1002/anie.201909614
日期:2020.1.27
In combination with bulky substituents at the core, fourfold benzannulation at the cata-positions stabilizes a nonacene sufficiently to allow its isolation and characterization by 1 H NMR and X-ray analysis. The four benzo units blueshift the absorption spectrum in comparison to a solely linear nonacene, but significantly increase the stability in the solid state.
与核心的庞大取代基结合,催化位置的四联苯并环足以稳定九碳烯,使其能够通过1 H NMR和X射线分析进行分离和表征。与仅线性壬并苯相比,四个苯并单元使吸收光谱发生蓝移,但显着增加了固态的稳定性。
Persistent Ambipolar Heptacenes and Their Redox Species
作者:Nico Zeitter、Nikolai Hippchen、Steffen Maier、Frank Rominger、Andreas Dreuw、Jan Freudenberg、Uwe H. F. Bunz
DOI:10.1002/anie.202200918
日期:2022.6.27
Soluble heptacenes are stabilized via TIPS-ethynylation and halogenation. TIPS-ethynylation on every second ring is critical for longevity. The moststable derivative is characterized in thin-film transistors and post-functionalized via Stille coupling to a nonarene.