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本文研究了聚2,6萘二甲酸乙二酯(PEN)及其结构单元2,6萘二甲酸二甲酯(DMN)的荧光光谱,在DMN的溶液中,由浓度效应和淬灭规律证明了它能形成激基缔合物。在PEN的溶液中,由其淬灭规律的不同,证明了存在着单分子荧光谱带和激基缔合物荧光谱带,进而由浓度效应证明了既有分子内激基缔合物,又有分子间激基缔合物,此外还研究了PEN拉伸膜与非拉伸膜的荧光,在膜中几乎观察不到单分子荧光谱带,而只有激基缔合物荧光。
In this paper, the fluorescence spectra of polyethylene naphthalate (PEN) and its structural unit 2,6-dimethyl naphthalate (DMN) were investigated. The concentration-response and quenching rules of DMN in solution of DMN were studied It can form exciplexes. In the solution of PEN, different quenching rules prove that there are single-molecular fluorescence bands and excimer fluorescence bands, and then the concentration effect proves that there are both exo-excimer and There is an intermolecular excimer, in addition, the fluorescence of PEN stretched film and non-stretched film is studied, and almost no single-molecule fluorescence band is observed in the film, and only the excimer fluorescence is observed.