酞菁化合物合成及光谱性能研究

为有效对抗高、超光谱成像侦察威胁,实现迷彩绿色涂料与植物的"同谱同色",本文基于酞菁与叶绿素卟啉结构的相似性,开展酞菁化合物合成及植物光谱特征拟合研究。构建吸电子取代基团和二价过渡族中心离子的平面酞菁结构,采用DBU催化法和自制合成装置合成酞菁化合物,探究最佳合成条件和提纯方法,采用分光光度计测试产物的吸收光谱和反射光谱,研究中心离子与聚集方式对酞菁化合物光谱性能的影响。实验结果表明,在催化剂作用下,四硝基金属酞菁在240~250℃时反应时间最短;钴酞菁比铁、锌、铜等作为中心取代离子形成的酞菁产物具有更尖锐的吸收峰,与绿色植物光谱曲线更相似;酞菁化合物的光谱反射曲线随温度、纯度及分散状态对产物聚集状态影响而产生移动。在220~240℃下合成20~30 min的四-硝基钴酞菁吸收光谱符合酞菁化合物Q带吸收特征,且其峰值波长与植物光谱相拟合,为酞菁类颜料在军事、纺织、染料、仿生等领域的应用提供了新方法和新途径。

Synthesis and spectral properties of phthalocyanine compounds

In order to effectively resist the threat of hyperspectral imaging and reconnaissance and achieve "the same spectrum and color" of camouflage paint and plants, based on the similarity between phthalocyanine and chlorophyll porphyrin structure, the synthesis of phthalocyanine compounds and the fitting of plant spectral features are carried out. The planar phthalocyanine structure of the electron-withdrawing substituent and the divalent transition center ion is constructed. The phthalocyanine compounds are synthesized by DBU catalysis and self-made synthesis equipment. The optimal synthesis conditions and purification methods are investigated. The absorption and reflectance spectra of the products are tested by spectrophotometer to study the influence of central ion and aggregation on the spectral properties of phthalocyanine compounds. The experimental results show that the reaction time of tetranitrometal phthalocyanine is the shortest at 240~250℃ under the action of catalyst; cobalt phthalocyanine has a sharper absorption peak than the phthalocyanine product formed by iron, zinc, copper and other centrally substituted ions, which is more similar to the green plant spectral curve; the spectral reflection curve of the phthalocyanine compound shifts with the influence of temperature, purity and dispersion state on the product aggregation state. The absorption spectrum of tetra-nitro cobalt phthalocyanine synthesized at 220~240℃ for 20~30 min are in agreement with the Q band absorption characteristics of phthalocyanine compounds, and its peak wavelengths are matched with the plant spectrum. It provides new methods and new approaches for the application of phthalocyanine pigments in the fields of military, textile, dye and bionic etc.