| 초록 |
It is envisaged that the well-defined ladder-type small molecules can function as donor monomers to polymerize with acceptor units, leading to a new class of donor-acceptor semi-ladder copolymers that can be suitably used for solution-processable polymer solar cells. Therefore, elegant designs and synthesis have been devoted towards hybridizing electron-rich aromatic subunits into mutually fused structures in the anticipation of extracting their individual intrinsic advantages. Various accessible electron-rich aromatic and heterocycles building blocks such as benzene, thiophene, selenophene, pyrrole, silole, germole, cyclopentadiene moieties can be chemically assembled to afford a range of fascinating ladder-type conjugated skeletons with tunable properties and functions. It should be emphasized that incorporation of aliphatic side chains into the conjugated backbone is necessary and side-chain engineering plays a critical role for such ladder-type conjugated molecules. |
