TY - JOUR
T1 - The Restoring Force Triangle
T2 - A Mnemonic Device for Polymer Mechanochemistry
AU - Sun, Yunyan
AU - Xie, Fangbai
AU - Moore, Jeffrey S.
N1 - Publisher Copyright:
© 2024 American Chemical Society.
PY - 2024/11/20
Y1 - 2024/11/20
N2 - In polymer mechanochemistry, mechanophores are specific molecular units within the macromolecular backbone that are particularly sensitive to tension. To facilitate understanding of this selective responsiveness, we introduce the restoring force triangle (RFT). The RFT is a mnemonic device intended to provide intuitive insight into how external tensile forces (i.e., stretching) can selectively activate scissile bonds, thereby initiating mechanically driven chemical reactions. The RFT utilizes two easily computable parameters: the effective bond stiffness constant, which measures a bond’s resistance to elongation, and the bond dissociation energy, which is the energy required to break a bond. These parameters help categorize reactivity into thermal and mechanical domains, providing a useful framework for developing new mechanophores that are responsive to force but thermally stable. The RFT helps chemists intuitively understand how tensile force contributes to the activation of a putative mechanophore, facilitating the development of mechanochemical reactions and mechano-responsive materials.
AB - In polymer mechanochemistry, mechanophores are specific molecular units within the macromolecular backbone that are particularly sensitive to tension. To facilitate understanding of this selective responsiveness, we introduce the restoring force triangle (RFT). The RFT is a mnemonic device intended to provide intuitive insight into how external tensile forces (i.e., stretching) can selectively activate scissile bonds, thereby initiating mechanically driven chemical reactions. The RFT utilizes two easily computable parameters: the effective bond stiffness constant, which measures a bond’s resistance to elongation, and the bond dissociation energy, which is the energy required to break a bond. These parameters help categorize reactivity into thermal and mechanical domains, providing a useful framework for developing new mechanophores that are responsive to force but thermally stable. The RFT helps chemists intuitively understand how tensile force contributes to the activation of a putative mechanophore, facilitating the development of mechanochemical reactions and mechano-responsive materials.
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U2 - 10.1021/jacs.4c10346
DO - 10.1021/jacs.4c10346
M3 - Article
C2 - 39503399
AN - SCOPUS:85208552809
SN - 0002-7863
VL - 146
SP - 31702
EP - 31714
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 46
ER -