Memory chromic polyurethane with tetraphenylethylene (pages 104–110)
You Wu, Jinlian Hu, Huahua Huang, Jie Li, Yong Zhu, Benzhong Tang, Jianping Han and Liangbin Li
Article first published online: 23 OCT 2013 | DOI: 10.1002/polb.23399
Covalently connecting tetraphenylethylene units to the soft segments of polyurethane is shown to produce a material that demonstrates reversible and simultaneous mechano-, solvato-, and thermochromic shape memory effects. The barrier for rotation of the tetraphenylethylene clusters is governed indirectly by the deformation and shape of the polymer, linking the two properties to the stimuli applied. Given the dual shape memory and thermochromic properties of the polymer, applications such as biomedical devices, textiles, and different sensors are anticipated.