We attempted to manufacture films in which fluorescent dye is dispersed using engineering plastic as a matrix which has high heat and chemical resistance as well as excellent mechanical performance. In this study, films containing highly dispersed perylene in colorless and transparent aromatic polyamide (PA) and polyimide (PI) were manufactured. The perylene-dispersed PA film emitted strong blue light with a maximum fluorescence at 457 nm. On the other hand, the perylene-dispersed PI film showed significant fluorescence quenching with its maximum fluorescence wavelength significantly red-shifted to 546 nm. The perylene-dispersed PI film treated with ethylene diamine at 80 °C showed strong blue fluorescence, and when the film was further heated at 200 °C, the fluorescence was quenched. These films are expected to be applied as back light unit or color conversion layer for OLED and Micro LED due to their excellent physical properties.

中文翻译：

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苝分散超级工程塑料薄膜的荧光行为


我们尝试使用工程塑料作为基体来制造分散有荧光染料的薄膜，该薄膜具有高耐热性和耐化学性以及优异的机械性能。在这项研究中，制造了在无色透明的芳香族聚酰胺（PA）和聚酰亚胺（PI）中含有高度分散的苝的薄膜。苝分散的 PA 薄膜发出强蓝光，最大荧光位于 457 nm。另一方面，苝分散的PI薄膜表现出明显的荧光猝灭，其最大荧光波长显着红移至546 nm。在80℃下经乙二胺处理的苝分散PI薄膜显示出强烈的蓝色荧光，当薄膜进一步加热到200℃时，荧光被猝灭。由于其优异的物理性能，这些薄膜有望用作OLED和Micro LED的背光单元或颜色转换层。