Flexible polyfluorinated bis-diazirines as molecular adhesives

Motivated by a desire to develop flexible covalent adhesives that afford some of the same malleability in the adhesive layer as traditional polymer-based adhesives, we designed and synthesized two flexible, highly fluorinated bis-diazirines. Both molecules are shown to function as effective crosslinkers for polymer materials, and to act as strong adhesives when painted between two polymer objects of low surface energy, prior to thermal activation. Data obtained from lap-shear experiments suggests that greater molecular flexibility is correlated with improved mechanical compliance in the adhesive layer.

Automated summary

Two flexible, highly fluorinated bis-diazirines were designed and synthesized to act as effective crosslinkers for polymer materials and strong adhesives between polymer objects of low surface energy. Data from lap-shear experiments indicates that greater molecular flexibility leads to improved mechanical compliance in the adhesive layer.