Photopolymerization of the obtained macromonomers was performed according to the procedure thoroughly described in our previous work . Briefly, the obtained telechelic macromonomers were mixed with a 2% w/w solution of Omnirad 819 photoinitiator in EtOAc. Then, the solvent was evaporated under reduced pressure and the obtained highly viscous liquid was poured onto a glass plate and was spread into a film with a steel applicator. In this manner, elastomeric films 1 mm of thickness were obtained. Next, the elastomeric networks were irradiated with a UVA light source (λpeak=385 nm; DYMAX Bluewave LED Prime UVA) for 150 s at a maximum intensity 20 mW/cm 2 . The process was carried out in a glove box under air and argon atmosphere.