Resumo

MORALES-SAAVEDRA, O.G.; GARCIA, T.; CAICEDO, C.  e  RIVERA, E. Non linear optical properties of novel amphiphilic azo-polymers bearing well defined oligo (ethylene glycol) spacers. Rev. mex. fis. [online]. 2010, vol.56, n.6, pp.449-455. ISSN 0035-001X.

Non linear optical (NLO) properties of a new series of pnPEGMAN polymers: p2PEGMAN or Poly[(E)-2-(2-(methyl(4-((4-nitrophenyl) diazenyl)phenyl) amino)ethoxy)ethyl methacrylate], p3PEGMAN or Poly[(E)-2-(2-(2-(methyl(4-((4-nitrophenyl)diazenyl)phenyl) amino) ethoxy)ethoxy)ethyl methacrylate], p4PEGMAN or Poly[(E)-2-(4-((4-nitrophenyl)diazenyl)phenyl)-5,8,11-trioxa-2-azatridecan-13-yl methacrylate] and p6PEGMAN or Poly[(E)-2-(4-((4-nitrophenyl) diazenyl) phenyl) -5,8,11,14,17-pentaoxa -2-azanonadecan -19-yl methacrylate] were studied by the Z-Scan technique. These azo-polymers exhibited high χ⁽³⁾ NLO-responses with excitation below the resonance absorption region of the polymers and the evaluated n₂-values are in the order of 10^-4 to 10^-5 esu, with negative sign for all the studied materials.

Palavras-chave : Polymers; azobenzene; poly(ethylene glycol); optical properties.