Decreased domain size of p-DTS(FBTTh2)(2)/P(NDI2OD-T2) blend films due to their different solution aggregation behavior at different temperatures
文献类型：期刊论文
| 作者 | Zhou, Ke; Zhao, Qiaoqiao; Zhang, Rui; Cao, Xinxiu; Yu, Xinhong; Liu, Jiangang; Han, Yanchun |
| 刊名 | PHYSICAL CHEMISTRY CHEMICAL PHYSICS
 |
| 出版日期 | 2017-12-28 |
| 卷号 | 19期号:48页码:32373-32380 |
| ISSN号 | 1463-9076 |
| DOI | 10.1039/c7cp07084e |
| 英文摘要 | Nanoscale interpenetrating networks play a key role in determining the optoelectrical properties of functional blends. However, phase separated large domain sizes could probably be observed in pristine films composed of two crystalline components. For example, p-DTS(FBTTh2)(2)/P(NDI2OD-T2) 3/2 blend films with interpenetrating networks are obtained, however, large domain sizes are found when they are prepared from a 20 degrees C solution due to the simultaneous process of crystallization and phase separation during solvent evaporation. In this paper, we proposed to reduce the domain size of p-DTS(FBTTh2)(2)/P(NDI2OD-T2) blend films using their different solution aggregation behaviors at different temperatures. The aggregation of p-DTS(FBTTh2)(2) molecules in chlorobenzene (CB) was insensitive to the solution temperature. However, the in situ absorption spectra of the neat P(NDI2OD-T2) solution from 80 degrees C to room temperature indicated that P(NDI2OD-T2) aggregation increased with decreasing temperature due to intrachain interactions. Therefore, in order to reduce the domain size, we employed a hot solution to prepare the blend films. During the solidification process, the majority of p-DTS(FBTTh2)(2) molecules were confined in the P(NDI2OD-T2) networks prior to occurrence of severe p-DTS(FBTTh2)(2) aggregation. Thus, the domain size of the p-DTS(FBTTh2)(2) phase became smaller than that of the pristine films, leading to a decrease in the corresponding photoluminescence intensity of the blend films. In addition, the crystallinity of the blend films improved after thermal annealing, which resulted from the ordered alignment of p-DTS(FBTTh2)(2) molecules facilitated by their enhanced diffusion ability. Based on the various morphologies, a possible phase diagram of the p-DTS(FBTTh2)(2)/P(NDI2OD-T2) blend system was depicted, which could be a guide to directly control the morphology of blend films. |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| WOS记录号 | WOS:000417958900019 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/45171]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Liu, Jiangang; Han, Yanchun |
| 作者单位 | Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, 5625 Renmin St, Changchun 130022, Jilin, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Ke,Zhao, Qiaoqiao,Zhang, Rui,et al. Decreased domain size of p-DTS(FBTTh2)(2)/P(NDI2OD-T2) blend films due to their different solution aggregation behavior at different temperatures[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2017,19(48):32373-32380. |
| APA | Zhou, Ke.,Zhao, Qiaoqiao.,Zhang, Rui.,Cao, Xinxiu.,Yu, Xinhong.,...&Han, Yanchun.(2017).Decreased domain size of p-DTS(FBTTh2)(2)/P(NDI2OD-T2) blend films due to their different solution aggregation behavior at different temperatures.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,19(48),32373-32380. |
| MLA | Zhou, Ke,et al."Decreased domain size of p-DTS(FBTTh2)(2)/P(NDI2OD-T2) blend films due to their different solution aggregation behavior at different temperatures".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 19.48(2017):32373-32380. |
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来源：化学研究所
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