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Title:Mechanophore-Linked Polymers for Studying Mechanochemical Response
Author(s):Potisek, Stephanie
Doctoral Committee Chair(s):Moore, Jeffrey S.
Department / Program:Chemistry
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Chemistry, Polymer
Abstract:An initial proof-of-concept experiment demonstrated that a mechanophore-linked polymer could be activated site-specifically via ultrasound-induced mechanical forces. Building on this idea, a method was established to synthesize mechanophore-linked poly(methyl acrylate) in an efficient manner using single electron transfer living radical polymerization (SET-LRP). The utility of this method was demonstrated with a spiropyran (SP) mechanophore that was found to undergo a mechanically induced 6pi-relectrocyclic ring opening. The mechanokinetics of the SP ring opening were probed and the reaction rate was found to increase linearly with increasing molecular weight. The analysis used for these studies will hopefully pave the way for future studies on the effect of molecular architecture on mechanochemical reactivity. Finally, we were able to realize a self-assessing mechanochromic material that directly couples mechanical energy to structural response, by incorporating a SP mechanophore into elastomeric and glassy materials.
Issue Date:2008
Description:143 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2008.
Other Identifier(s):(MiAaPQ)AAI3337890
Date Available in IDEALS:2015-09-25
Date Deposited:2008

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