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首页> 外文期刊>Journal of Materials Chemistry, C. materials for optical and electronic devices >Fluorescent crystals and co-crystals of 1,8-naphthalimide derivatives: synthesis, structure determination and photophysical characterization
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Fluorescent crystals and co-crystals of 1,8-naphthalimide derivatives: synthesis, structure determination and photophysical characterization

机译：1,8-萘二甲酰亚胺衍生物的荧光晶体和共晶体：合成，结构确定和光物理特征

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摘要

A series of 4-pyperidinyl-1,8-naphthalimide derivatives containing at the N-position an n-methylpyridine (n = 2, 3, or 4) have been synthesized and isolated as crystalline materials. These isomers were further reacted, in the solid state, with the co-former 1,4-diiodotetrafluorobenzene (I2F4) to give three new co-crystals of the general formula n(2).I2F4. All crystalline materials have been thoroughly characterized in the solid state via single-crystal and powder X-ray diffraction, infrared spectroscopy and thermal methods; in addition, the photophysical properties of all compounds have been investigated in solution and in the solid state. The fluorescence features of the crystalline solids depend on the different arrangement of the molecules in the lattice and co-crystallization leads to important changes in the emission properties of the crystalline compounds. Emission quantum yields of the solids vary between 0.11 and 0.50.
机译：合成并分离出一系列在N-位含有n-甲基吡啶（n = 2、3或4）的4-吡啶基-1,8-萘二甲酰亚胺衍生物，并将其作为结晶材料分离。这些异构体在固态下进一步与共形成剂1,4-二碘四氟苯（I2F4）反应，得到三个新的通式n（2）.I2F4共晶体。通过单晶和粉末X射线衍射，红外光谱和热方法，已对所有晶体材料进行了彻底的固态表征。另外，已经在溶液和固态下研究了所有化合物的光物理性质。结晶固体的荧光特征取决于分子在晶格中的不同排列，并且共结晶导致结晶化合物的发射性质发生重要变化。固体的发射量子产率在0.11至0.50之间变化。

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