Design, Synthesis and Properties of Semi-Alicyclic Colorless and Transparent Polyimide Films with High Glass Transition Temperatures and Low Retardation for Potential Applications in Flexible Electronics Article Swipe
Xi Ren
,
Zhibin He
,
Zhenzhong Wang
,
Zhen Pan
,
Yuexin Qi
,
Shujun Han
,
Haifeng Yu
,
Jingang Liu
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.3390/polym15163408
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.3390/polym15163408
Polyimide (PI) optical films with high glass transition temperatures (high-Tg), high optical transparency, and low optical retardations (low-Rth) are highly desired in advanced optoelectronic applications. However, the standard PI films usually suffer from deep colors, high optical anisotropies and limited Tg values. In the current work, a series of semi-alicyclic colorless and transparent PI (CPI) films were developed from hydrogenated pyromellitic dianhydride stereoisomers, 1S,2R,4S,5R-hydrogenated pyromellitic dianhydride and 1R,2S,4S,5R-hydrogenated pyromellitic dianhydride, and fluorene-containing diamines, including 9,9-bis(4-aminophenyl)fluorene and 9,9-bis(3-fluoro-4-aminophenyl)fluorene, respectively. The derived CPI films showed Tg values higher than 420 °C according to differential scanning calorimetry measurements. In addition, the fluorene-based CPI film showed optical transmittances higher than 80% at the wavelength of 400 nm, with yellow indices in the range of 0.60~1.01 and haze values below 3.0%. The CPI films showed average refractive indices from 1.5407 to 1.6309, extremely low birefringence at the level of minus fourth power of ten, and further exhibited quite low optical retardations below 10 nm.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/polym15163408
- https://www.mdpi.com/2073-4360/15/16/3408/pdf?version=1692096683
- OA Status
- gold
- Cited By
- 20
- References
- 45
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4385835415
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- OpenAlex ID
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https://openalex.org/W4385835415Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3390/polym15163408Digital Object Identifier
- Title
-
Design, Synthesis and Properties of Semi-Alicyclic Colorless and Transparent Polyimide Films with High Glass Transition Temperatures and Low Retardation for Potential Applications in Flexible ElectronicsWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2023Year of publication
- Publication date
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2023-08-14Full publication date if available
- Authors
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Xi Ren, Zhibin He, Zhenzhong Wang, Zhen Pan, Yuexin Qi, Shujun Han, Haifeng Yu, Jingang LiuList of authors in order
- Landing page
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https://doi.org/10.3390/polym15163408Publisher landing page
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https://www.mdpi.com/2073-4360/15/16/3408/pdf?version=1692096683Direct link to full text PDF
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YesWhether a free full text is available
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goldOpen access status per OpenAlex
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https://www.mdpi.com/2073-4360/15/16/3408/pdf?version=1692096683Direct OA link when available
- Concepts
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Pyromellitic dianhydride, Fluorene, Polyimide, Alicyclic compound, Materials science, Glass transition, High-refractive-index polymer, Differential scanning calorimetry, Optoelectronics, Refractive index, Polymer chemistry, Nanotechnology, Polymer, Composite material, Layer (electronics), Thermodynamics, PhysicsTop concepts (fields/topics) attached by OpenAlex
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20Total citation count in OpenAlex
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2025: 14, 2024: 5, 2023: 1Per-year citation counts (last 5 years)
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45Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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