Soluble High-<i>T</i><sub>g</sub> Polymers for Second-Order Nonlinear Optics from an Unusual Mix of Imide and Siloxane Linkages in the Backbone

Jiang, Hongwei; Kakkar, Ashok

doi:10.1021/ma980309r

Cited by 37 publications

(26 citation statements)

References 17 publications

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“…PESI‐X were stable up to 320°C no decomposition in DSC thermogram was observed for this temperature. All azopolymers display high thermal stability that can be ascribed to imide groups and fulfill thermal requirements for constructing of optical devices 42…”

Section: Resultsmentioning

confidence: 99%

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Influence of azobenzene units on imidization kinetic of novel poly(ester amic acid)s and polymers properties before and after cyclodehydration

Schab‐Balcerzak

Janeczek

Kucharski

2010

J of Applied Polymer Sci

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In this article, the imidization reaction kinetic of novel poly(ester amic acid)s with azobenzene units as side groups was studied by dynamic experiments by means of differential scanning calorimetry. Polymers differ in the number of chromophore moieties in their repeating unit and position in which azobenzene group is attached to the polymer chain. The kinetic parameters of poly(ester amic acid)s conversion to poly(ester imide)s was compared with data calculated for parent polymer, that is, without azobenzene groups. For the first time to our knowledge, the imidization kinetic of polymers with side azobenzene groups was studied. Kinetic parameters, such as the activation energy and frequency factor were estimated with the by Ozawa model [ (E(O) and A(O)), respectively] and Kissinger model [(E(K) and A(K), respectively].The values of activation energy determined with both models were in the range 167.1-198.3 kJ/mol. The lowest activation energy of imidization reaction exhibited polymer in which azobenzene units were placed between amide linkages. Polymers were characterized by FTIR, 1 H-NMR, X-ray, and UV-vis methods. The glass transition temperature of resultant poly(ester imide)s was in the range of 217-237 C. The presence of chromophore units slightly decreased T g and significantly improved their solubility and optical properties.

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Section: Resultsmentioning

confidence: 99%

“…All azopolymers display high thermal stability that can be ascribed to imide groups and fulfill thermal requirements for constructing of optical devices. 42…”

Section: Thermal Propertiesmentioning

confidence: 99%

Influence of azobenzene units on imidization kinetic of novel poly(ester amic acid)s and polymers properties before and after cyclodehydration

Schab‐Balcerzak

Janeczek

Kucharski

2010

J of Applied Polymer Sci

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“…[1][2][3] Moreover, polymers have great flexibility in the range of polymer-chromophore combinations that can be selected to particular applications. To develop practical devices, the nonlinear optical (NLO) polymer materials must fulfill many requirements including thermal, chemical and photochemical stability, low optical propagation losses, and mechanical properties for multilayer films processing.…”

Section: Introductionmentioning

confidence: 99%

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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“…Polymer‐based second‐order nonlinear optical (NLO) materials have been intensively studied because of their large linear electro‐optic coefficients, low dielectric constants, and flexibility in processing techniques that are compatible with integrated circuit technology 1–9. The major problem limiting the practical application of these polymer‐based NLO materials, their relatively low temporal stability of dipole orientation, has been somewhat solved by the advent of high glass‐transition temperature ( T g ) polymers such as polyimide (PI), especially when the NLO groups are chemically bonded to the polymer backbones 10–32…”

Section: Introductionmentioning

confidence: 99%

Study on side‐chain second‐order nonlinear optical polyimides based on novel chromophore‐containing diamines. II. Copolyimides possessing direct photolithographic features

Sui¹,

Lu²,

Yin³

et al. 2001

J. Polym. Sci. A Polym. Chem.

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Second‐order nonlinear optical copolyimides were prepared from a novel chromophore‐containing diamine, 4‐nitro‐4′‐[N‐(4,6‐di‐4‐aminophenylamino)‐1,3,5‐triazin‐2‐yl]aminoazobenzene, a codiamine, 4,4′‐diamino‐3,3′‐dimethyldiphenylmethane, and benzophenone‐3,3′,4,4′‐tetracarboxylic dianhydride by a traditional two‐step process, which includes a solution polycondensation followed by a chemical imidization. Some of the polyimides (PIs) obtained possessed direct photolithographic features, and good photolithographic patterns were easily obtained. All PIs exhibited high‐glass transition temperatures (235–246 °C) and high thermal‐decomposition temperatures. They were also soluble in strong polar aprotic solvents such as N‐methyl‐2‐pyrrolidone, dimethylacetamide, dimethylformamide, dimethyl sulfoxide, and γ‐butyrolactone. © 2001 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 39: 1419–1425, 2001

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Soluble High-T_g Polymers for Second-Order Nonlinear Optics from an Unusual Mix of Imide and Siloxane Linkages in the Backbone

Cited by 37 publications

References 17 publications

Influence of azobenzene units on imidization kinetic of novel poly(ester amic acid)s and polymers properties before and after cyclodehydration

Influence of azobenzene units on imidization kinetic of novel poly(ester amic acid)s and polymers properties before and after cyclodehydration

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

Study on side‐chain second‐order nonlinear optical polyimides based on novel chromophore‐containing diamines. II. Copolyimides possessing direct photolithographic features

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Soluble High-Tg Polymers for Second-Order Nonlinear Optics from an Unusual Mix of Imide and Siloxane Linkages in the Backbone

Cited by 37 publications

References 17 publications

Influence of azobenzene units on imidization kinetic of novel poly(ester amic acid)s and polymers properties before and after cyclodehydration

Influence of azobenzene units on imidization kinetic of novel poly(ester amic acid)s and polymers properties before and after cyclodehydration

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

Study on side‐chain second‐order nonlinear optical polyimides based on novel chromophore‐containing diamines. II. Copolyimides possessing direct photolithographic features

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Soluble High-T_g Polymers for Second-Order Nonlinear Optics from an Unusual Mix of Imide and Siloxane Linkages in the Backbone