Electrooptic proprieties of layer-by-layer films of a azobenzene containing copolymer
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Data
2005-12-01
Autores
Ribeiro, Paulo A.
Gomes, Paulo J.
Ferreira, Quirina
Raposo, Maria
Dos Santos, David S.
Balogh, Débora T.
Oliveira Jr., Osvaldo N.
Giacometti, J. A. [UNESP]
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Resumo
The methacrylic copolymer functionalized with the azo chromophore 4-[N-ethyl-N-(2-hydroxiethyl)]-amino-2′-chloro-4-nitroazobenzene (MMADR13), in its polyelectrolyte form, can be used to fabricate thin films by the layer-by-layer (LbL) technique just if one alternates this anionic polyelectrolyte with a cationic polyelectrolyte such as poly(allylamine hydrochloride) (PAH). Since PAH does not present any particular optical functionality, the main final film feature will came from the side chain DR13 azo-chromophore group due to its large nonlinear optical properties and photoisomerization capabilities. This work reports the electrooptic activity of MMADR13/DR13 LBL films, which arises from the high hiperpolarizability about the azo side chain group.
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Acrylic monomers, Azobenzene, Cationic polymerization, Chromophores, Copolymerization, Electrooptical effects, Anionic polyelectrolytes, Electrooptic proprieties, Layer by layer films (LbL), Methacrylic copolymer, Polymer films
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Proceedings - International Symposium on Electrets, v. 2005, p. 528-531.