Methyl Side-Group-Regulated Terphenyl Polyimides with High Heat Resistance and Ultralow Thermal Expansion for OLED Applications
Zhongjiao Yu,
Yunzhi Fang,
Xuemin Lu
et al.
Abstract:Polyimides have attracted increasing attention due to
being promising
candidate materials for flexible display substrates. However, to meet
the rigorous demands of thin-film transistor processing, the heat
resistance and dimensional stability of polyimides need to be further
improved. In this work, we designed a series of terphenyl diamines
with small side methyl groups. This rodlike linear molecular terphenyl
structure provides the self-orientation ability to achieve the purpose
of reducing the coefficient of… Show more
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