Critical Role of Alkyl Chain Branching of Organic Semiconductors in Enabling Solution-Processed N-Channel Organic Thin-Film Transistors with Mobility of up to 3.50 cm(2) V-1 s(-1)
文献类型：期刊论文
| 作者 | Zhang, Fengjiao1; Hu, Yunbin2; Schuettfort, Torben3; Di, Chong-an1; Gao, Xike2; McNeill, Christopher R.4; Thomsen, Lars5; Mannsfeld, Stefan C. B.6; Yuan, Wei2; Sirringhaus, Henning3 |
| 刊名 | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
 |
| 出版日期 | 2013-02-13 |
| 卷号 | 135期号:6页码:2338-2349 |
| ISSN号 | 0002-7863 |
| DOI | 10.1021/ja311469y |
| 英文摘要 | Substituted side chains are fundamental units in solution processable organic semiconductors in order to achieve a balance of close intermolecular stacking, high crystallinity, and good compatibility with different wet techniques. Based on four air-stable solution-processed naphthalene diimides fused with 2-(1,3-dithiol-2-ylidene)malononitrile groups (NDI-DTYM2) that bear branched alkyl chains with varied side-chain length and different branching position, we have carried out systematic studies on the relationship between film microstructure and charge transport in their organic thin-film transistors (OTFTs). In particular synchrotron measurements (grazing incidence X-ray diffraction and near-edge X-ray absorption fine structure) are combined with device optimization studies to probe the interplay between molecular structure, molecular packing, and OTFT mobility. It is found that the side-chain length has a moderate influence on thin-film microstructure but leads to only limited changes in OTFT performance. In contrast, the position of branching point results in subtle, yet critical changes in molecular packing and leads to dramatic differences in electron mobility ranging from similar to 0.001 to >3.0 cm(2) V-1 s(-1). Incorporating a NDI-DTYM2 core with three-branched N-alkyl substituents of C-11,C-6 results in a dense in-plane molecular packing, with an unit cell area of 127 angstrom(2), larger domain sizes of up to 1000 X 3000 nm(2), and an electron mobility of up to 3.50 cm(2) V-1 s(-1), which is an unprecedented value for ambient stable n-channel solution-processed OTFTs reported to date. These results demonstrate that variation of the alkyl chain branching point is a powerful strategy for tuning of molecular packing to enable high charge transport mobilities. |
| 语种 | 英语 |
| WOS记录号 | WOS:000315080100055 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/54853]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Di, Chong-an |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Key Lab Organ Solids, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Organ Chem, Mat Sci Lab, Shanghai 200032, Peoples R China 3.Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England 4.Monash Univ, Dept Mat Engn, Clayton, Vic 3800, Australia 5.Australian Synchrotron, Clayton, Vic 3168, Australia 6.SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA |
| 推荐引用方式 GB/T 7714 | Zhang, Fengjiao,Hu, Yunbin,Schuettfort, Torben,et al. Critical Role of Alkyl Chain Branching of Organic Semiconductors in Enabling Solution-Processed N-Channel Organic Thin-Film Transistors with Mobility of up to 3.50 cm(2) V-1 s(-1)[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2013,135(6):2338-2349. |
| APA | Zhang, Fengjiao.,Hu, Yunbin.,Schuettfort, Torben.,Di, Chong-an.,Gao, Xike.,...&Zhu, Daoben.(2013).Critical Role of Alkyl Chain Branching of Organic Semiconductors in Enabling Solution-Processed N-Channel Organic Thin-Film Transistors with Mobility of up to 3.50 cm(2) V-1 s(-1).JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,135(6),2338-2349. |
| MLA | Zhang, Fengjiao,et al."Critical Role of Alkyl Chain Branching of Organic Semiconductors in Enabling Solution-Processed N-Channel Organic Thin-Film Transistors with Mobility of up to 3.50 cm(2) V-1 s(-1)".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 135.6(2013):2338-2349. |
入库方式： OAI收割
来源：化学研究所
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