de Souza, Nara C.Cavalheri, Adriana S. [UNESP]Brito, Jackeline B.Job, Aldo Eloizo [UNESP]Oliveira, Osvaldo N.Giacometti, Jose A. [UNESP]Silva, Josmary R.2014-05-202014-05-202012-04-02Chemical Physics Letters. Amsterdam: Elsevier B.V., v. 531, p. 110-113, 2012.0009-2614http://hdl.handle.net/11449/6865Azobenzene molecules and their derivatives have been widely investigated for their potential applications in optical and electrooptical devices. We have prepared a new guest-host system from natural rubber (NR) impregnated with azobenzene derivative Sudan Red B (SRB). The effects of stretching and immersion time on photoinduced orientation were investigated by birefringence signal measurements. We have found that the molecular orientation increase when the samples are stretched and decrease with the increase of immersion time. The first behavior was explained by using the random coil model and the latter was attributed to increase of the aggregation of SRB into NR matrix. (C) 2012 Published by Elsevier B.V.110-113engArtigo10.1016/j.cplett.2012.01.070WOS:000301931800021Acesso restrito6475585105456744