Memory chromic polyurethane with tetraphenylethylene

摘要: This article reports a chromic polymer, which is responsive to its shape memory properties and has both the behavior of polymers materials. We employed strategy fabricate such smart material, represents new principle for making material made polyurethane with tetraphenylethylene units (0.1 wt %) covalently connected soft-segments (PCL, Mw = 4000). The displays biocompatibility, fixity 88–93%, almost 100% recovery reversible mechanochromic, solvatochromic, thermochromic effect. chromism represented by change emission intensity shows negative correlation fixity, temperature, existence solvent. It may be explained that when soft segments are molten or dissolved in solvent, switch open, AIE free from crystal binding can migrate easily larger areas, thus units/particles far apart each other barrier rotation phenyl groups reduced, lead reduction intensity, appeared no colors pale colors, vice versa. Since fundamental structural character SMPs, have led we call this chromic. © 2013 Wiley Periodicals, Inc. J. Polym. Sci. Part B: Phys. 2014, 52, 104–110