Fig. 3: Postmortem mapping of damage by bond scission.
a Mechanophores (DACL) based on π-extended anthracene-maleimide adducts yield π-extended anthracene moieties upon force-induced cycloreversion. b The mechanophores are incorporated into the PDMS chains by substituting a given fraction of the crosslinks. c After cutting the pure shear samples at a given value of pre-stretch λ, fluorescence microscopy was performed near the fracture surfaces (red square) and represented in (d), the size bar corresponds to 100 μm in all damage maps: the PDMS sample is on the left of the bright fracture surface where damage is concentrated. e Comparison of the damage maps for two different pre-stretch λ of 1.2 (i) and 1.45 (ii) with the corresponding average depth profile of bond damage φy.
