项目名称: 基于螺旋结构的手性Schiff碱聚合物的设计合成、吸波性能和构效关系研究
项目编号: No.21264011
项目类型: 地区科学基金项目
立项/批准年度: 2013
项目学科: 数理科学和化学
项目作者: 刘崇波
作者单位: 南昌航空大学
项目金额: 50万元
中文摘要: 手性隐身材料具有电磁场可以交叉极化,手性参数可调,频率敏感性小,容易实现宽频吸收等优点,是世界军事强国研究开发的先进隐身材料之一;Schiff碱类隐身材料由于质轻、带宽、吸波性能良好而成为热点研究方向;将手性引入Schiff碱类隐身材料中以期通过两者的协同增效作用,获得性能更加优越的隐身材料,这无疑具有重要的科学意义和良好的应用前景,对增强我国航空兵器的作战能力和减少电磁波的污染做出更大贡献。 通过设计合成一系列含氧官能团取代的手性二胺和双羰基化合物,并通过它们的缩聚反应合成一系列具有螺旋结构的手性Schiff碱聚合物,利用UV-vis、FT-IR、XRD、CD和GPC、DTA-TG手段对聚合物的结构、手征特性和热性能等进行表征,检测化合物的导电性、磁性和吸波性能,并探讨这类化合物的结构、手性与吸波性能的关系及吸波机理,为进一步研究手性吸波材料奠定基础。
中文关键词: 手性Schiff碱聚合物;合成;吸波性能;螺旋结构;构效关系
英文摘要: Chiral stealth material as one of advanced stealth material have caused intensive concerns of the military powers of all over the word because of numerous advantages, such as cross-polarization of electromagnetic fields, adjustable hand parameters, small insensitivity to the frequency and broadband absorption and so on. In addition, Schiff base stealth material is also one of hot spots as another stealth material due to light weight, band-width, excellent absorbing properties. Thus, in the project chirality will be introduced to Schiff base stealth materials in order to obtain the stealth materials with superior absorbing properties by synergy effect. It not only has great scientific significance and wide application prospects, but also makes a greater contribution to enhance the combat capability of aviation weapon and to reduce the electromagnetic pollution to the environment. A series of chiral Schiff base polymers with helical structures will be synthesized via addition -condensation rection between a series of diamine and dicarbonyl compounds with hydroxyl, carboxyl or sulfonyl ester groups. The structures, chirality and thermal property of the polymers will be characterized by Ultraviolet visible spectrophotometer (UV-vis), Fourier transform infrared (FT-IR) spectra, Single crystal X-ray diffraction, circu
英文关键词: Chiral Schiff Base Polymers;syntheses;absorbing property;helix structure;structure-activity relationship