A new trifluoromethyl-substituted bis(ether amine) monomer, 2,7-bis(4-amino-2-trifluoromethylphenoxy)naphthalene, was synthesized. It led to a series of novel fluorinated polyimides by thermal and chemical imidization routes when reacted with various commercially available aromatic tetracarboxylic dianhydrides. Most of the polyimides obtained from both routes were soluble in many organic solvents, such as N,N-dimethylacetamide. All the polyimides could afford transparent, flexible, and strong films with low moisture absorptions of 0.3–0.6%, low dielectric constants of 2.52–3.27 at 10 kHz, and an ultraviolet–visible absorption cutoff wavelength at 377–436 nm. The glass-transition temperatures of the polyimides were in the range of 244–297 °C, and the 5% weight-loss temperatures were higher than 550 °C. For a comparative study, a series of analogous polyimides based on 2,7-bis(4-aminophenoxy)naphthalene were also prepared and characterized. © 2003 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 41: 2001–2018, 2003

中文翻译：

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基于2,7-双（4-氨基-2-三氟甲基苯氧基）萘的新型氟化聚酰亚胺的合成与表征

合成了一种新的三氟甲基取代的双（醚胺）单体2,7-双（4-氨基-2-三氟甲基苯氧基）萘。当与各种可商购的芳族四羧酸二酐反应时，通过热和化学酰亚胺化途径产生了一系列新颖的氟化聚酰亚胺。从这两种途径获得的大多数聚酰亚胺都可溶于许多有机溶剂，例如N，N-二甲基乙酰胺。所有的聚酰亚胺都可以提供透明，柔软而坚固的薄膜，其吸湿率低至0.3-0.6％，10 kHz时介电常数低至2.52-3.27，紫外可见吸收截止波长在377-436 nm。聚酰亚胺的玻璃化转变温度为244–297°C，5％的失重温度高于550°C。为了进行比较研究，还制备并表征了一系列基于2,7-双（4-氨基苯氧基）萘的类似聚酰亚胺。©2003 Wiley Periodicals，Inc. J Polym Sci A部分：Polym Chem 41：2001–2018，2003