Fig. 5: Smart wound healing based on mechanically switchable adhesives.
From: Unusual photo-tunable mechanical transformation of azobenzene terminated aliphatic polycarbonate
a The stress values of universal bonding of trans-rich and cis-rich AZ-APCs to various substrates (distinct samples, mean ± s.d., n = 3). b Schematic illustration of dipole moments and electron cloud densities of the AZ-APC and the AZ initiator based on Gaussian theory. c Demonstration of the adhesive properties of AZ-APC adhesive by finger joints. d–f Biocompatibility and cellular safety: d Hemolysis rate test, hemolysis rate less than 5% could be used as a biomaterial. Three repeated measurements were made on different samples (distinct samples, mean ± s.d., n = 3). e, f The clonogenic ability of HUVEC cells after transfection, indicating that HUVEC cells cultured by the experimental group had strong proliferative vigor (the clonogenic test of the samples was repeated 3 times). g Representative photographs of wound healing under different treatments (control and experimental groups). h Typical wound closure rates for the treatment period. i Dimensional changes of wound healing of different treatment groups at different healing times.
