期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 24, 期 13, 页码 3170-3173出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201800194
关键词
chromism; mechanochemistry; mechanochromism; polymer reactions; radicals
资金
- KAKENHI grants from the Japan Society for the Promotion of Science (JSPS) [17H01205, 15K17907]
- ImPACT Program of the Council for Science, Technology, and Innovation (Cabinet Office, Government of Japan)
- Grants-in-Aid for Scientific Research [15K17907, 17H01205] Funding Source: KAKEN
Mechanochromic polymers, that is, polymers sensitive to mechanical impact, promise great potential for applications in damage sensors. In particular, radical-type mechanochromic polymers, which produce colored radical species in response to mechanical stress, may enable not only the visualization of mechanical stress, but also its quantitative evaluation by electron paramagnetic resonance analysis. Herein, a radical-type mechanochromic polymer that exhibits a color change from white to green upon dissociation of a diarylbibenzothiophenonyl moiety at the mid-point of a polystyrene chain is presented, and its mechanochromic behavior is examined. Mechanochromic materials that show a variety of colors (rainbow colors) in response to mechanical stress were prepared by simply mixing radical-type mechanochromic polymers of primary colors.
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