Progress toward sustainable polymer technologies with ball-mill grinding

A Rizzo, GI Peterson - Progress in Polymer Science, 2024 - Elsevier
The ball-mill grinding (BMG) of polymers has a long history, starting with Staudinger
showing in the 1930s that polystyrene undergoes chain scission upon ball milling. However …

Experimental quantitation of molecular conditions responsible for flow-induced polymer mechanochemistry

RT O'Neill, R Boulatov - Nature Chemistry, 2023 - nature.com
Fragmentation of macromolecular solutes in rapid flows is of considerable fundamental and
practical importance. The sequence of molecular events preceding chain fracture is poorly …

Meeting the UN Sustainable Development Goals with Mechanochemistry

J Alić, MC Schlegel, F Emmerling… - Angewandte Chemie …, 2024 - Wiley Online Library
Chemistry traditionally relies on reactions in solution, but this method is increasingly
problematic due to the scale of chemical processes and their economic and environmental …

Mechanochemical Release of Fluorophores from a “Flex‐activated” Mechanophore

F Yang, T Geng, H Shen, Y Kou, G Xiao… - Angewandte Chemie …, 2023 - Wiley Online Library
Optical force probes that can release force‐dependent and visualized signals with minimal
changes in the polymer main chains under mechanical load are highly sought after but …

Dual ratiometric fluorescence monitoring of mechanical polymer chain stretching and subsequent strain-Induced crystallization

K Suga, T Yamakado, S Saito - Journal of the American Chemical …, 2023 - ACS Publications
Tracking the behavior of mechanochromic molecules provides valuable insights into force
transmission and associated microstructural changes in soft materials under load. Herein …

Mechanochemistry of pterodactylane

M Horst, J Meisner, J Yang… - Journal of the …, 2023 - ACS Publications
Pterodactylane is a [4]-ladderane with substituents on the central rung. Comparing the
mechanochemistry of the [4]-ladderane structure when pulled from the central rung versus …

Coumarin Dimer Is an Effective Photomechanochemical AND Gate for Small-Molecule Release

X He, Y Tian, RT O'Neill, Y Xu, Y Lin… - Journal of the …, 2023 - ACS Publications
Stimulus-responsive gating of chemical reactions is of considerable practical and
conceptual interest. For example, photocleavable protective groups and gating …

Force-triggered atropisomerization of a parallel diarylethene to its antiparallel diastereomers

X Fu, B Zhu, X Hu - Journal of the American Chemical Society, 2023 - ACS Publications
This paper describes a mechanical approach to inducing the atropisomerization of a parallel
diarylethene into its antiparallel diastereomers exhibiting distinct chemical reactivity. A …

Mechanochemically responsive polymer enables shockwave visualization

PJ Centellas, KD Mehringer, AL Bowman… - Nature …, 2024 - nature.com
Understanding the physical and chemical response of materials to impulsive deformation is
crucial for applications ranging from soft robotic locomotion to space exploration to …

Sacrificial Mechanical Bond is as Effective as a Sacrificial Covalent Bond in Increasing Cross-Linked Polymer Toughness

H Yokochi, RT O'Neill, T Abe, D Aoki… - Journal of the …, 2023 - ACS Publications
Sacrificial chemical bonds have been used effectively to increase the toughness of
elastomers because such bonds dissociate at forces significantly below the fracture limit of …