期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 134, 期 30, 页码 12446-12449出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja305645x
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资金
- U.S. Army Research Laboratory
- U.S. Army Research Office [W911NF-07-1-0409]
- National Science foundation [DMR 10-39479]
- JSPS
- Arnold and Mabel Beckman Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1039479] Funding Source: National Science Foundation
- Grants-in-Aid for Scientific Research [11J09581] Funding Source: KAKEN
A novel mechanophore with acid-releasing capability is designed to produce a simple catalyst for chemical change in materials under mechanical stress. The mechanophore, based on a gem-dichlorocyclopropanated indene, is synthesized and used as a cross-linker in poly(methyl acrylate). Force-dependent rearrangement is demonstrated for cross-linked mechanophore samples loaded in compression, while the control shows no significant response. The availability of the released acid is confirmed by exposing a piece of insoluble compressed polymer to a pH indicator solution. The development of this new mechanophore is the first step toward force-induced remodeling of stressed polymeric materials utilizing acid-catalyzed cross-linking reactions.
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