Electrooptic properties of layer-by-layer films of a azobenzene containing copolymer

Author

Ribeiro, P.A. ; Ferreira, Q. ; Raposo, M. ; dos Santos, D.S. ; Balogh, D.T. ; Oliveira, O.N. ; Giacometti, J.A.

Author_Institution

CEFITEC, Univ. Nova de Lisboa, Caparica, Portugal

fYear

2005

fDate

11-14 Sept. 2005

Firstpage

532

Lastpage

534

Abstract

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 hyperpolarizability about the azo side chain group.

Keywords

electro-optical effects; isomerisation; nonlinear optics; photochemistry; polarisability; polymer blends; polymer electrolytes; polymer films; 4-[N-ethyl-N-(2-hydroxiethyl)]-amino-2´-chloro-4-nitroazobenzene; MMADR13/DR13 LBL films; azo chromophore; azo side chain group; electrooptic activity; electrooptic properties; hyperpolarizability; layer-by-layer film; methacrylic copolymer; nonlinear optical properties; optical functionality; photoisomerization capability; poly(allylamine hydrochloride); polyelectrolyte; Atom optics; Atomic measurements; Birefringence; Gratings; Methanol; Nonlinear optics; Optical films; Optical polymers; Polymer films; Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 2005. ISE-12. 2005 12th International Symposium on

Print_ISBN

0-7803-9116-0

Type

conf

DOI

10.1109/ISE.2005.1612444

Filename

1612444