ノート
アゾピリジン色素を含有する N-イソプロピルアクリルアミド共重合体の光異性化挙動
2011 年 68 巻 4 号 p. 195-197
詳細
2011 年 68 巻 4 号 p. 195-197
Azopyridine-containing methacrylate monomer was copolymerized with N-isopropylacrylamide by radical polymerization. The copolymer with N-isopropylacrylamide content of >0.99 showed a solvent-dependent photochromic behavior. In a THF solution, the trans-cis photoisomerization of the azopyridine moieties smoothly proceeded by a UV light irradiation, while the copolymer displayed a negligible change in the UV/Vis absorption spectra in water. The decrease in the photoisomerization efficiency was probably due to the immobilization of the trans-azopyridine moieties in the polymer matrices because of hydrogen-bonding interactions between the amide and pyridine groups and water molecules.
