| 초록 |
Tremendous efforts have been focused on the design of building blocks for polymer backbones, owing to the conventional belief that the band gap and energy levels are principally determined by conjugated backbone. In contrast, relatively little attention has been paid to the side chain engineering. Structural modification of polymer side chains, such as alterations in length, shape, position, bulkiness, symmetry, density, and chirality can substantially impact intermolecular interaction and molecular packing. Therefore, side-chain engineering can be as important as manipulating conjugated backbones. In this talk, I will present our recent research outcome regarding the substantially enhanced charge-transport characteristics of a series of side-chain engineered DPP-based polymers, compared with their structural counterparts with conventional side chains. Our findings will provide guidelines for molecular design of high-performance semiconducting polymers via side chain engineering. |
