| Инд. авторы: | Vaganova T.A., Plekhanov A.I., Simanchuk A.E., Mikerin S.L., Spesivtsev E.V., Karpova E.V., Frolova T.S., Malykhin E.V. |
| Заглавие: | Synthesis and characterization of novel polyhalogenaromatic polyimide material for electro-optic applications |
| Библ. ссылка: | Vaganova T.A., Plekhanov A.I., Simanchuk A.E., Mikerin S.L., Spesivtsev E.V., Karpova E.V., Frolova T.S., Malykhin E.V. Synthesis and characterization of novel polyhalogenaromatic polyimide material for electro-optic applications // Journal of fluorine chemistry . - 2017. - Vol.195. - P.70-78. - ISSN 0022-1139. - EISSN 1873-3328. |
| Внешние системы: | DOI: 10.1016/j.jfluchem.2017.01.010; SCOPUS: 2-s2.0-85010209735; WoS: 000395605000009; |
| Реферат: | eng: New highly fluorinated aromatic polyimide based on 4-chloro-2,5,6-trifluoro-1,3-phenylenediamine and 2,2-bis(3',4'-dicarboxyphenyl)hexafluoroPropane dianhydride was prepared by the two methods condensation in a solution followed by a high-temperature solid-state chain extension and one-pot high temperature polycondensation in a benzoic acid melt. The polyimide is soluble in polar amide- and ketone-type solvents, has good thermal stability and a high glass transition temperature. The polyimide films exhibit a low cut-off wavelength and excellent transparency in the UV-vis-near IR range. Low molecular weight prepolymer, formed by the solution condensation, was used to obtain the guest-host electro-optic polymer having a high glass transition temperature. The prepolymer layer doped with azochromophore DR1 (25 wt%) was subjected to a combined poling+curing procedure upon a two stepped heating in a corona discharge field. Nonlinear optical coefficient d(33) of the prepared chromophore-doped highly halogenated polyimide film measured by the Maker fringes method is 70 pm/V at the fundamental wavelength of 1064 nm and remains stable up to 85 degrees C. (C) 2017 Elsevier B.V. All rights reserved.
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| Ключевые слова: | SIDE-CHAIN; RECENT PROGRESS; REFRACTIVE-INDEX; AZO CHROMOPHORES; THERMAL-STABILITY; SOLUBLE POLYIMIDES; POLYMERIZATION; NONLINEAR-OPTICAL POLYMERS; Second harmonic generation; NLO material; Polyfluorinated polyimides; Polycondensation; FLUORINATED POLYIMIDES; SYSTEMS; |
| Издано: | 2017 |
| Физ. характеристика: | с.70-78 |