Proton-Coupled Mechanochemical Transduction: A Mechanogenerated Acid
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- 作者：Charles E. Diesendruck ; Brian D. Steinberg ; Naoto Sugai ; Meredith N. Silberstein ; Nancy R. Sottos ; Scott R. White ; Paul V. Braun ; Jeffrey S. Moore
- 刊名：The Journal of the American Chemical Society
- 出版年：2012
- 出版时间：August 1, 2012
- 年：2012
- 卷：134
- 期：30
- 页码：12446-12449
- 全文大小：253K
- 年卷期：v.134,no.30(August 1, 2012)
- ISSN：1520-5126
文摘
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.