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DOI | 10.1038/s41467-017-02774-9 |
Photo-triggered solvent-free metamorphosis of polymeric materials | |
Honda, Satoshi; Toyota, Taro | |
2017-09-11 | |
发表期刊 | NATURE COMMUNICATIONS
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ISSN | 2041-1723 |
出版年 | 2017 |
卷号 | 8 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | Liquefaction and solidification of materials are the most fundamental changes observed during thermal phase transitions, yet the design of organic and polymeric soft materials showing isothermal reversible liquid-nonliquid conversion remains challenging. Here, we demonstrate that solvent-free repeatable molecular architectural transformation between liquid-star and nonliquid-network polymers that relies on cleavage and reformation of a covalent bond in hexaarylbiimidazole. Liquid four-armed star-shaped poly(n-butyl acrylate) and poly(dimethyl siloxane) with 2,4,5-triphenylimidazole end groups were first synthesized. Subsequent oxidation of the 2,4,5-triphenylimidazoles into 2,4,5-triphenylimidazoryl radicals and their coupling with these liquid star polymers to form hexaarylbiimidazoles afforded the corresponding nonliquid network polymers. The resulting nonliquid network polymers liquefied upon UV irradiation and produced liquid star-shaped polymers with 2,4,5-triphenylimidazoryl radical end groups that reverted to nonliquid network polymers again by recoupling of the generated 2,4,5-triphenylimidazoryl radicals immediately after terminating UV irradiation. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000410237600004 |
WOS关键词 | PHOTOCHEMICALLY REVERSIBLE LIQUEFACTION ; PHOTOINDUCED PHASE-TRANSITIONS ; CYCLIC POLYMER ; AZOBENZENE ; LIGHT ; TRANSFORMATION ; HEXAARYLBIIMIDAZOLE ; SOLIDIFICATION ; DERIVATIVES ; LINKING |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/203650 |
专题 | 资源环境科学 |
作者单位 | Univ Tokyo, Grad Sch Arts & Sci, Dept Basic Sci, Meguro Ku, 3-8-1 Komaba, Tokyo 1538902, Japan |
推荐引用方式 GB/T 7714 | Honda, Satoshi,Toyota, Taro. Photo-triggered solvent-free metamorphosis of polymeric materials[J]. NATURE COMMUNICATIONS,2017,8. |
APA | Honda, Satoshi,&Toyota, Taro.(2017).Photo-triggered solvent-free metamorphosis of polymeric materials.NATURE COMMUNICATIONS,8. |
MLA | Honda, Satoshi,et al."Photo-triggered solvent-free metamorphosis of polymeric materials".NATURE COMMUNICATIONS 8(2017). |
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