Proton-Coupled Mechanochemical Transduction: A Mechanogenerated Acid
Journal of the American Chemical Society2012Vol. 134(30), pp. 12446–12449
Citations Over TimeTop 10% of 2012 papers
Charles E. Diesendruck, Brian D. Steinberg, Naoto Sugai, Meredith N. Silberstein, Nancy R. Sottos, Scott R. White, Paul V. Braun, Jeffrey S. Moore
Abstract
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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