A photo-functional electro-optic polyimide with excellent high-temperature stability
| Autor: | Haemin Seo, Jae Won Ka, Jongsun Lim, Gyungock Kim, Junyong Chung, Mi Hye Yi |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Annealing (metallurgy) Process Chemistry and Technology General Chemical Engineering Poling 02 engineering and technology Chromophore 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Diamine Polyamide Irradiation 0210 nano-technology Polyimide |
| Zdroj: | Dyes and Pigments. 163:547-552 |
| ISSN: | 0143-7208 |
| DOI: | 10.1016/j.dyepig.2018.12.049 |
| Popis: | We herein report the preparation of a soluble polyimide from a photoreactive diamine and a phenolic diamine, to which electro-optic (EO) properties were imparted by the introduction of an EO chromophore (Disperse Red 1) into the phenolic group of the polyimide. Following poling at 1 MV/cm and 210 °C, the polyimide was irradiated with UV light (280–310 nm) to form a photo-crosslinking network. The EO coefficient of the polyimide-containing EO device was 27.7 p.m./V at 1.3 μm, and this value was maintained at ≥90%, even after annealing at 150 °C for 500 h. Our results indicated that the thermal and chemical stabilities of the EO polyamide were remarkably increased due to the photo-crosslinking reaction. |
| Databáze: | OpenAIRE |
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