An In Situ Investigation into the Formation of the Solvent-Induced Crystalline Phase of Poly(9,9-Dioctylfluorene) in Solvent Vapor Annealing
文献类型：期刊论文
| 作者 | Yang H(杨华); Yang, H; Qu, KX; Li, HD; Cheng, H; Zhang, JD; Cheng H(程贺)
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| 刊名 | MACROMOLECULAR CHEMISTRY AND PHYSICS
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| 出版日期 | 2016 |
| 卷号 | 217期号:14页码:1579-1585 |
| 关键词 | polyfluorene solvent annealing in-situ investigation liquid crystalline molecular packing |
| DOI | 10.1002/macp.201600012 |
| 通讯作者 | 程贺 |
| 文献子类 | Article |
| 英文摘要 | A new metastable solvent-induced clathrate liquid crystalline phase of beta phase (named beta' here) in crystalline poly(9,9-dioctylfluorene) (PFO) thin film induced by solvent annealing is found by a combination of in situ ultraviolet and visible spectrophotometry (UV-vis), photoluminescence spectroscopy (PL), and grazing incidence wide-angle X-ray scattering (GIWAXS). The solvent annealing process consists of three processes: diffusion of solvent molecules into the film; saturation of solvent in the film; and drying of the film under nitrogen. The formation of beta' phase with ordered packing of side chains and disordered packing of backbones occurs during the diffusion process of solvent molecules into the film. When the solvent molecules penetrate the film, the disordered side chains start to align themselves to form an ordered structure, and the ordering would gradually in the saturation-process. Furthermore, the ordering of side chains drives an ordered rearrangement of the backbones during the drying process; however, the crystallinity of the side chains decreases with the orderly rearrangement of backbones due to the helical conformation of PFO. |
| 学科主题 | Polymer Science |
| WOS关键词 | POLYOCTYLFLUORENE THIN-FILM ; LIGHT-EMITTING DIODE ; BETA-PHASE ; CONJUGATED POLYMERS ; ENERGY-TRANSFER ; MORPHOLOGY ; POLYFLUORENES ; ENHANCEMENT ; EMISSION ; POLY(9,9-DI-N-OCTYL-2,7-FLUORENE) |
| 语种 | 英语 |
| WOS记录号 | WOS:000382963600004 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/260193]  |
| 专题 | 高能物理研究所_东莞分部 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Yang H,Yang, H,Qu, KX,et al. An In Situ Investigation into the Formation of the Solvent-Induced Crystalline Phase of Poly(9,9-Dioctylfluorene) in Solvent Vapor Annealing[J]. MACROMOLECULAR CHEMISTRY AND PHYSICS,2016,217(14):1579-1585. |
| APA | 杨华.,Yang, H.,Qu, KX.,Li, HD.,Cheng, H.,...&程贺.(2016).An In Situ Investigation into the Formation of the Solvent-Induced Crystalline Phase of Poly(9,9-Dioctylfluorene) in Solvent Vapor Annealing.MACROMOLECULAR CHEMISTRY AND PHYSICS,217(14),1579-1585. |
| MLA | 杨华,et al."An In Situ Investigation into the Formation of the Solvent-Induced Crystalline Phase of Poly(9,9-Dioctylfluorene) in Solvent Vapor Annealing".MACROMOLECULAR CHEMISTRY AND PHYSICS 217.14(2016):1579-1585. |
入库方式： OAI收割
来源：高能物理研究所
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