Evolution of the Optical Gap in the Acene Series: Undecacene
作者:Bin Shen、Jörg Tatchen、Elsa Sanchez‐Garcia、Holger F. Bettinger
DOI:10.1002/anie.201802197
日期:2018.8.13
Undecacene, the largest member of the acene family, was photogenerated in a polymer matrix under cryogenic conditions from a precursor with two α‐diketone bridges. The electronic absorption of undecacene extends into the NIR region, but the spectrum is dominated by two strong absorptions in the UV/Vis range. The HOMO–LUMO transition is continuously shifted to lower energies as the number of rings of