| Physical and Chemical Properties | The chemical properties carry azobenzene discoloration group on the polymer side chain. Azobenzene has cis and trans discoloration due to-N = N-formation, trans isomer absorption peak 360nm, cis isomer absorption peak 320nm. |
| Use | Applications of photochromic materials synthesis of light energy directly into mechanical energy of the material, control materials. |
There are three methods for the synthesis of polymers containing azobenzene structure:
First synthesize vinyl-containing azobenzene compounds, and then undergo homopolymerization or copolymerization with other olefin monomers, such as the reaction of hydroxymethyl acrylamide and styrene copolymer with amino azobenzene derivatives;
Coupling reaction of polym-hydroxystyrene with diazo compounds;
The azobenzene structure is introduced into the molecular chain of polyamide and nylon 66 by copolycondensation.