Optically active photochromic copolymers, deriving from methyl methacrylate (MMA) and the methacrylic ester of (S)-3-hydroxypyrrolidine linked through the nitrogen atom to the highly conjugated photochromic 4′-(β-cyano-β-(methylsulfonyl)vinyl)-4-azobenzene moiety, have been prepared and characterized with the aim to evaluate the effect on their chiro-optical and thermal properties exerted by the insertion of inactive MMA groups along the main chain. The results indicate that these properties are still remarkable at a content of photochromic units as low as 26 mol-%.
Angiolini, L., Caretti, D., Giorgini, L., Salatelli, E. (2001). Methacrylic polymers bearing side-chain permanent dipole azobenzene chromophores spaced from the main chain by chiral moieties Part 21: Copolymers with methyl methacrylate. E-POLYMERS, 1(1), 1-12.
Methacrylic polymers bearing side-chain permanent dipole azobenzene chromophores spaced from the main chain by chiral moieties Part 21: Copolymers with methyl methacrylate
Caretti D.;Giorgini L.;Salatelli E.
2001
Abstract
Optically active photochromic copolymers, deriving from methyl methacrylate (MMA) and the methacrylic ester of (S)-3-hydroxypyrrolidine linked through the nitrogen atom to the highly conjugated photochromic 4′-(β-cyano-β-(methylsulfonyl)vinyl)-4-azobenzene moiety, have been prepared and characterized with the aim to evaluate the effect on their chiro-optical and thermal properties exerted by the insertion of inactive MMA groups along the main chain. The results indicate that these properties are still remarkable at a content of photochromic units as low as 26 mol-%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
