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题名: The adjustment of bandgap and coplanarity of diketopyrrolopyrrole-based copolymers through fine-tuning of the conjugated backbones and applications in thin film field effect transistors
作者: Sun, Jibin1; Liu, Zitong1; Luo, Hewei1; Yang, Sifen1; Yao, Jingjing1; Zhang, Guanxin1; Zhang, Deqing1
刊名: JOURNAL OF MATERIALS CHEMISTRY C
发表日期: 2016-10-21
卷: 4, 期:39, 页:9359-9365
收录类别: SCI
英文摘要: In order to demonstrate the influence of structural fine-tuning on bandgap and semiconductor performance of pi-conjugated polymer materials, three new diketopyrrolopyrrole (DPP) based copolymers P1, P2 and P3 with monomers, i.e., 2-phenylpyridine, 2-(thiophen-2-yl)pyridine and 2-(thiophen-2-yl)thiazole, respectively, have been synthesized using a typical Suzuki cross-coupling polycondensation. The DFT calculations demonstrate that polymer P3 displays high backbone coplanarity in comparison to polymers P1 and P2. Absorption spectra results reveal that P3 exhibits a remarkable red-shifted absorption profile, narrow band gap and broad absorption. The thin film FET measurements show that P3 possesses the highest hole mobility (mu(h)) up to 1.25 cm(2) V-1 s(-1) and on/off (/(on/off)) ratio as high as 10(8). Those results demonstrate that the fine-tuning of the pi-conjugated backbone can significantly affect the band gaps and coplanarities, and ultimately improve the semiconducting performances.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35103
Appears in Collections:有机固体实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Chem, Organ Solids Lab, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
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