抄録
Photocontrol of polypeptide conformation was attempted by using polyaspartates containing azobenzene moieties in their side chains. It was found by circular dichroism (CD) measurements that trans-cisphotoisomerization causes conformational changes such as left-handed α-helix→right-handed α-helix and left-handed α-helix→random coil. The photoresponsive behavior was remarkably solvent dependent, marked conformational changes being induced in the mixed solvents of adequate solvent compositions. The polyaspartates showed no photoinduced conformational change in the solid films although heating caused conformational transitions.
