Artículos de revistas
Optical storage in azobenzene-containing epoxy polymers processed as Langmuir Blodgett films
Fecha
2013Registro en:
Materials Science and Engineering C, Lausanne : Elsevier, v. 33, n. 3, p. 1403-1408, Apr. 2013
0928-4931
10.1016/j.msec.2012.12.043
Autor
Fernández, Raquel
Mondragon, Iñaki
Sanfelice, Rafaela C.
Pavinatto, Felippe José
Oliveira Junior, Osvaldo Novais de
Oyanguren, Patricia
Galante, María J.
Institución
Resumen
In this study, azocopolymers containing different main-chain segments have been synthesized with diglycidyl ether of bisphenol A (DGEBA, DER 332, n=0.03) and the azochromophore Disperse Orange 3 (DO3) cured with twomonoamines, viz. benzylamine (BA) and m-toluidine (MT). The photoinduced birefringence was investigated in films produced with these azopolymers using the spin coating (SC) and Langmuir Blodgett (LB) techniques. In the LB films, birefringence increased with the content of azochromophore and the film thickness, as expected. The nanostructured nature of the LB films led to an enhanced birefringence and faster dynamics in the writing process, compared to the SC films. In summary, the combination of azocopolymers and the LBmethod may allow materials with tuned properties for various optical applications, including in biological systems were photoisomerization may be used to trigger actions such as drug delivery.