GSTDTAP  > 资源环境科学
DOI10.1038/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
ISSN2041-1723
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
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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
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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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