MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, and Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China. Department of Pharmacy and Chemistry, Taizhou University, Taizhou 317000,People's Republic of China.
Nanotechnology. 2014 Jan 10;25(1):014006. doi: 10.1088/0957-4484/25/1/014006. Epub 2013 Dec 11.
A diketo-pyrrolo-pyrrole (DPP) oligomer containing three DPP cores (Ph4Th4(DPP)3) was synthesized via direct arylation of C-H bonds (DACH). Ph4Th4(DPP)3 has good solubility in many organic solvents, and shows a broad absorption band from the visible to near-infrared region as well as a field-effect hole mobility as high as 0.006 cm(2) V(-1) s(-1). Solution-processed bulk heterojunction organic solar cells based on blends of Ph4Th4(DPP)3 as electron donor and fullerene derivative as electron acceptor were fabricated. An optimized power conversion efficiency of 3.76% with a high open-circuit voltage of 0.85 V was achieved after finely tuning the morphology by changing the blend ratio and by adding additives. These results indicate that DACH is an effective way to produce π-conjugated oligomers for organic solar cells.
一种含有三个 DPP 核心的二酮吡咯并吡咯（DPP）低聚物（Ph4Th4(DPP)3）通过 C-H 键的直接芳基化（DACH）合成。Ph4Th4(DPP)3 在许多有机溶剂中具有良好的溶解性，表现出从可见光到近红外区域的宽吸收带以及高达 0.006 cm(2) V(-1) s(-1)的场效应空穴迁移率。基于 Ph4Th4(DPP)3 作为电子给体和富勒烯衍生物作为电子受体的混合物的溶液处理体异质结有机太阳能电池被制造。通过精细调整共混比和添加添加剂来改变形态，优化后的功率转换效率为 3.76%，开路电压高达 0.85V。这些结果表明，DACH 是一种用于有机太阳能电池的有效方法来制备π共轭低聚物。
