两种萘酰亚胺类化合物及其聚合物荧光性质的研究

本文以1,8萘酰亚胺为原料,合成了两种萘酰亚胺类型的化合物,系统地研究了它们在不同溶剂中的吸收光谱和荧光光谱.并以这两种化合物单体为基础,通过共聚合成了它们与甲基丙烯酸甲酯和N 乙烯基咔唑的嵌段共聚物.研究了聚合物在溶液和薄膜中的荧光性质.研究结果证明,所得共聚物不但保持了单体的基本荧光特性,其溶解性、成膜性、热稳定性等都得到了大大改善,是一种有应用前景的有机发光半导体材料.此外,本文还利用荧光猝灭的手段研究了萘酰亚胺类化合物与C₆₀之间的相互作用.

THE FLUORESCENCE PROPERTY OF TWO NAPHTHALIMIDE DERIVATIVES AND THEIR POLYMERS

Two derivatives of 4-amino-1,8 naphthalimide were synthesized. Their photophysical properties were studied in various solvents. Both of their absorption and emission spectra showed a red shift as the polarity of solvents increased. But due to their different molecular structure, their photophysical properties showed some difference. The possibility of synthesizing colored copolymers by copolymerization with methylmethacrylate and N-vinylcarbazole including naphthalimide luminophores was investigated. The photophysical properties of the copolymers were studied and it showed little change in the fluorescence properties of copolymers compared with monomers. The fluorescence quenching mechanism between the two monomers and C_ 60 were also studied, the strong quenching may be caused by photoinduced charge transfer and π-π conjugated system interaction between luminophores and C_ 60. Further studies of their potential applications in organic electroluminescence fields were going on.