Journal
ACS MACRO LETTERS
Volume 7, Issue 9, Pages 1087-1091Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsmacrolett.8b00521
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Funding
- KAKENHI 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] Funding Source: KAKEN
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Mechanochromism can be triggered by different mechanical stimuli, such as tension, compression, shearing, and sonication. Freezing a polymer gel also induces mechanical stress on the polymer network. Herein, freezing-induced mechanoluminescence is demonstrated for the first time by introduction of a tetraarylsuccinonitrile moiety as a light-emitting mechanochromophore at the cross-linking points of a polymer network, in which the mechanical stress induces not only a color change but also light emission. The detailed mechanism and characteristics of this freezing-induced mechanoluminescence were quantitatively evaluated by electron paramagnetic resonance spectroscopy.
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