Nonlinear optical polyimides with various substituents on chromophores: synthesis and glass transition temperature

Do, J.Y.; Park, S.K; Ju, Jeongho; Park, S; Lee, M.-H

doi:10.1016/j.optmat.2004.03.004

Cited by 16 publications

(2 citation statements)

References 16 publications

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“…The result has to be explained by the changed intermolecular interactions of the differently substituted azobenzene groups. Alkyl attachment on a chromophore has been sometimes found to prevent intermolecular dipole interactions [5]. In order to avoid any restrictions which disturb generating of anisotropy, polymer 3b has been exposed to non-polarized UV light before the linearly polarized irradiation.…”

Section: Irradiation Of Polymer Films With Linearly Polarized Lightmentioning

confidence: 99%

“…In comparison with the use of inorganic materials, polymers are much more attractive for applications because they offer many advantages such as high optical non-linearity, high damage threshold, low dielectric constant, chemical resistance, mechanical endurance, light weight, and good processability [1][2][3][4][5]. Moreover, polymers have great flexibility in the range of polymer-chromophore combinations that can be selected to suit particular applications.…”

Section: Introductionmentioning

confidence: 99%

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New photochromic polyimides

Schab‐Balcerzak

Sapich²,

Hass

et al. 2005

SPIE Proceedings

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A series of new polyesterimides (PEIs) containing photochromic azobenzene moieties have been synthesized. For this purpose the following diesterdianhydrides with azobenzene groups have been prepared: 2,2'-{4-[(4-nitrophenyl)-azo} phenyl]iminobis(ethyl benzene-1,2-dicarboxylic acid anhydride-4-carboxylate), 2,2'-{4-[(4-methylphenyl)-azo}phenyl] iminobis(ethyl benzene-1,2-dicarboxylic acid anhydride-4-carboxylate) and 2,2'-{4-[(4-fluorophenyl)-azo}phenyl] iminobis(ethyl benzene-1,2-dicarboxylic acid anhydride-4-carboxylate). The polyesterimides have been obtained from diesterdianhydrides and 1,3-phenylenediamine using high-temperature polycondensation. The resulting polyimides are characterized as having good solubility in some solvents, high glass transition temperatures (168-210°C) and good film forming properties. The irradiation with linearly polarized light causes a reorientation of the azobenzene groups by angular-selective E/Z photoisomerization. In this way optical anisotropy is induced in the initially isotropic films casting from solution of the amorphous polymers. The photoinduced dichroism in the films has been measured to investigate the effect of azobenzene substitution.

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Section: Irradiation Of Polymer Films With Linearly Polarized Lightmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New photochromic polyimides

Schab‐Balcerzak

Sapich²,

Hass

et al. 2005

SPIE Proceedings

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Synthesis and characterization of styrene/maleimide copolymer with 4‐[N‐ethyl‐N‐(2‐hydroxyethyl) amino]‐4′‐nitroazobenzene as side chain

Liu

Weichun

et al. 2008

J of Applied Polymer Sci

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Relatively low thermal stability of secondorder nonlinear optical (NLO) coefficient due to the relaxation of dipole orientation is a major problem limiting the practical application of these NLO polymers. NLO polymers with suitable T g are always important for optical devices. In the present work a synthetic approach to styrene-(N-(4-hydroxyphenyl) maleimide) copolymer (SHMI) with 4-[N-ethyl-N-(2-hydroxyethyl) amino]-4 0 -nitroazobenzene (DR1) as side chain and chromophores has made it possible to efficiently prepare a NLO polymer. The copolymer with high T g of 2028C has low relaxation of dipole orientation. The maximum optical loss at the optical communication wavelength is less than 0.9 dB. NLO coefficient r 33 is 8.2 pm/V (1550 nm) and its maximum relaxation at room temperature is 18%.

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Post and prepolymerization strategies to develop novel photochromic poly(esterimide)s

Schab‐Balcerzak

Siwy

Jarząbek

et al. 2010

J of Applied Polymer Sci

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This paper reports novel photoresponsive, processable poly(esterimide)s functionalized with the azobenzene and tricyanovinylene groups. Post and prepolymerization strategies were utilized for preparation of the new photochromic polymers with imide rings. The postpolymerization method of azopolymer synthesis included a functionalization of precursor poly(esterimide) containing dialkylaminophenyl groups with diazonium salt of aniline. The precursor poly(esterimide) was obtained from synthe-

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Nonlinear optical polyimides with various substituents on chromophores: synthesis and glass transition temperature

Cited by 16 publications

References 16 publications

New photochromic polyimides

New photochromic polyimides

Synthesis and characterization of styrene/maleimide copolymer with 4‐[N‐ethyl‐N‐(2‐hydroxyethyl) amino]‐4′‐nitroazobenzene as side chain

Post and prepolymerization strategies to develop novel photochromic poly(esterimide)s

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