

FOLLOWUS
a.South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China
b.Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
fbao@scut.edu.cn (F.B.)
huangmj25@scut.edu.cn (M.J.H.)
Received:23 April 2023,
Revised:2023-5-24,
Accepted:31 May 2023,
Online First:24 July 2023,
Published:01 October 2023
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Zou, B. Y.; Qiu, L. H.; Lei, H. Y.; Liu, J. M.; Peng, W. F.; Zhao, H. Q.; Bao, F.; Huang, M. J. Fluorinated colorless polyimides with high heat-resistance and low birefringence. Chinese J. Polym. Sci. 2023, 41, 1599–1608
Bing-Yu Zou, Lu-Hao Qiu, Huan-Yu Lei, et al. Fluorinated Colorless Polyimides with High Heat-resistance and Low Birefringence[J]. Chinese Journal of Polymer Science, 2023, 41(10): 1599-1608.
Zou, B. Y.; Qiu, L. H.; Lei, H. Y.; Liu, J. M.; Peng, W. F.; Zhao, H. Q.; Bao, F.; Huang, M. J. Fluorinated colorless polyimides with high heat-resistance and low birefringence. Chinese J. Polym. Sci. 2023, 41, 1599–1608 DOI: 10.1007/s10118-023-3011-6.
Bing-Yu Zou, Lu-Hao Qiu, Huan-Yu Lei, et al. Fluorinated Colorless Polyimides with High Heat-resistance and Low Birefringence[J]. Chinese Journal of Polymer Science, 2023, 41(10): 1599-1608. DOI: 10.1007/s10118-023-3011-6.
We designed and synthesized a series of fluorinated colorless polyimides (CPI) through one-step polymerization of 2
5-substituted m-phenylenediamine diamine and CHDA dianhydride. Excellent combination of high heat-resistance
high transparency and low birefringence was achieved in these CPIs with simple chemical structures.
The development of optical films with high transparency
high thermal resistance and low birefringence remains a challenge in the flexible display industry. In this work
we designed and synthesized a series of fluorinated colorless polyimides (CPIs) materials using 2
5-substituted
m
-phenylenediamine diamine monomers and 1
2
4
5-cyclohexanetetracarboxylic dianhydride (CHDA). We systematically studied the effects of fluorinated group substitutions on the thermal
mechanical
optical and dielectric properties of CPI films. The introduction of alicyclic CHDA dianhydride affords high transparency and low yellowness
while the 2
5-substituted
m
-phenylenediamine diamines offer the CPIs with quite low birefringence as well as high glass transition temperatures. A particular CHDA/
o
3FBDA film with simple chemical structure stands out
exhibiting well-balanced overall properties.
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