Insight into thin-film stacking modes of pi-expanded quinoidal molecules on charge transport property via side-chain engineering
文献类型：期刊论文
| 作者 | Zhang, Cheng1,2; Yuan, Dafei1,2; Wu, Hao1,2; Gann, Eliot3; Thomsen, Lars4; McNeill, Christopher R.3; Di, Chong-an1; Zhu, Xiaozhang1,2; Zhu, Daoben1 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY C
 |
| 出版日期 | 2017 |
| 卷号 | 5期号:8页码:1935-1943 |
| 英文摘要 | Control of molecular ordering and packing of pi-conjugated molecules in the solid state is crucial for enhancing the charge transport properties in organic electronics. A series of quinoidal materials based on different alkyl-chain branching positions on the thieno[3,4-c]pyrrole-4,6-dione moiety flanked with unsymmetric thieno[3,4-b]thiophenes (2DQTT-n) are synthesized. By the combination of organic thin-film transistor performances and thin-film characterization, we clarified the influence of the branching position on the film microstructure/molecular packing and charge transport properties. Air-stable solution-processable n-channel 2DQTT-n derivatives show dramatic changes in film morphology and molecular packing, which leads to disparate electron mobilities ranging from similar to 0.34 to 4.5 cm(2) V-1 s(-1). 2DQTT-1 with a branching point at the two-position in the alkyl side chain results in a 3D molecular packing with a lamellate morphology, and an electron mobility of up to 4.5 cm(2) V-1 s(-1) using an annealing temperature of just 80 degrees C. In contrast, the other three materials exhibit polymorphs and 2DQTT-3 and 2DQTT-4 even show mix-oriented crystallites which are highly disadvantageous to charge transport. These results demonstrate that variation of the alkyl-chain branching point is a powerful strategy to tune the stacking modes in the thin-film state, which enables high charge transport properties. |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/38176]  |
| 专题 | 化学研究所_有机固体实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Beijing 100049, Peoples R China 3.Monash Univ, Dept Mat Sci & Engn, Clayton, Vic 3800, Australia 4.Australian Synchrotron, 800 Blackburn Rd, Clayton, Vic 3168, Australia |
| 推荐引用方式 GB/T 7714 | Zhang, Cheng,Yuan, Dafei,Wu, Hao,et al. Insight into thin-film stacking modes of pi-expanded quinoidal molecules on charge transport property via side-chain engineering[J]. JOURNAL OF MATERIALS CHEMISTRY C,2017,5(8):1935-1943. |
| APA | Zhang, Cheng.,Yuan, Dafei.,Wu, Hao.,Gann, Eliot.,Thomsen, Lars.,...&Zhu, Daoben.(2017).Insight into thin-film stacking modes of pi-expanded quinoidal molecules on charge transport property via side-chain engineering.JOURNAL OF MATERIALS CHEMISTRY C,5(8),1935-1943. |
| MLA | Zhang, Cheng,et al."Insight into thin-film stacking modes of pi-expanded quinoidal molecules on charge transport property via side-chain engineering".JOURNAL OF MATERIALS CHEMISTRY C 5.8(2017):1935-1943. |
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来源：化学研究所
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