一种新型AIE/AIEE特征荧光染料的合成与光谱性质研究

Synthesis and Spectral Properties of a Novel AIE/AIEE Characteristic Fluorescent Dye

聚集诱导发光增强(AIEE)现象,因其特殊的荧光性质在已成为国内外研究的热点。本论文设计并合成了一种新型AIEE的荧光染料,首先以2-羟基-6-萘甲醛为骨架,在1号位引入醛基,其次,醛基在与1-氨基苯硫醇反应,合成新型聚集诱导发光增强AIEE荧光染料,经分离纯化后获得产物Np-COH。进一步对产物通过质谱确定其分子量为410.05,并对此荧光染料的紫外光谱和不同条件下的荧光光谱进行了测定。测定结果显示该新型荧光染料在水比二甲基亚砜为30%条件下,表现了较好的荧光性能,在水比二甲基亚砜大于50%条件下,荧光较弱。Np-COH荧光染料在515 nm处的荧光受p H值影响有微弱的变化,说明染料能在较宽的pH值范围内使用。

Aggregation Induced Emission Enhancement(AIEE) phenomenon, has been the focus of research at home and abroad, this type of molecule has special fluorescence properties and a wide range of applications, this paper designed and synthesized a new type of AIEE fluorescent dye, first of all,2-hydroxy-6-naphthalene formaldehyde as the skeleton, the introduction of aldehyde group at no. 1 position, secondly, the aldehyde group in the reaction with 1-aminobenzenethiol, the synthesis of a new type of aggregation-induced luminescence enhanced AIEE fluorescent dye, after separation and purification to obtain the product Np-COH. The molecular weight of the product was further determined by mass spectrometry to be 410.05, and the ultraviolet spectrum of this fluorescent dye and the fluorescence spectrum under different conditions were determined. The measurement results showed that the new fluorescent dye showed good fluorescence performance under the condition that the water ratio was 30 % to dimethyl sulfoxide, and the fluorescence was weaker under the condition that the water was greater than 50 % of dimethyl sulfoxide. The fluorescence of Np-COH fluorescent dyes at 515 nm has a slight change in the influence of pH, indicating that the dye can be used in a wide pH range.