The Influence of Terminal Push-Pull Substitution on the Electronic Structure and Optical Properties of Pentacenes
作者:Christina Tönshoff、Holger F. Bettinger
DOI:10.1002/chem.201101036
日期:2012.2.6
The synthesis of 2,3‐R2‐9,10‐(OMe)2‐substituted pentacenes (R=OMe, F, Br, CN; 1–4) from 2,3‐R2‐9,10‐dimethoxy‐6,13‐dihydro‐6,13‐ethanopentacene‐15,16‐diones (α‐diketone‐bridged precursors) by photochemically induced bis‐decarbonylation (Strating–Zwanenburg reaction) is described. Under matrix‐isolation conditions (solid Ar, 10K) the S1 transitions of 1 and 2 undergo hypsochromic and those of 3 and