可聚合1,8-萘酰亚胺衍生物掺杂聚硅氧烷复合材料的合成及荧光特性

合成了3种可聚合的1,8-萘酰亚胺衍生物, 并研究了其在二甲基亚砜(DMSO)溶液中的光物理性质. 这些化合物表现出的光物理性质与其电子环境有关. 通过溶胶-凝胶法制备了可聚合1,8-萘酰亚胺衍生物与硅氧烷的共聚物. 尽管3种萘酰亚胺衍生物C-4位的取代基不同, 但在3-氨丙基三乙氧基硅烷(APTES)固凝胶中摩尔分数为0.06%时荧光强度均最大. 利用 ²⁹Si MAS NMR对合成材料进行了表征, 结果表明, 硅氧烷的缩聚程度影响材料的荧光强度, 说明材料中荧光单元的分子运动对材料的荧光性能有重要影响.

Synthesis and Fluorescence Properties of Polymerizable 1,8-Naphthalimide Derivatives Doped Polysiloxane Materials

Three polymerizable 1,8-naphthalimide derivatives were synthesized and their photophysical properties in DMSO solution were determined.1H NMR spectra of these compounds revealed the electronic environment surrounding the hydrogen nucleus which is proved to be related to their photophysical properties.Highly fluorescent polysiloxane materials were prepared by condensation of polymerizable 1,8-naphthalimides derivatives with γ-aminopropyl triethoxysilane(APTES) by the sol-gel process.It was found that all of the 1,8-naphthalimides derivatives with different substituent at C-4 position possess the best fluorescence intensity while doped in polysiloxane at molar fraction of 0.06%.29Si MAS NMR and fluorescence measurement results show that the degree of condensation of polysiloxane also affect the fluorescence of materials,which hints that the molecular motion is the stronger factor than substituent effect on the fluorescence of the solid materials.