基于溶剂原位傅克偶联反应合成杯芳烃有机多孔网络(CalixPOF)及其染料吸附特性

利用1,2-二氯乙烷(DCE)同时作为溶剂和偶联剂,通过溶剂原位傅克偶联反应合成杯芳烃有机多孔网络(CalixPOF)。采用红外光谱(FT-IR)和固体核磁碳谱(13 C-NMR)对CalixPOF的组成和分子结构进行了表征,验证了溶剂原位Friedel-Crafts偶联反应机理。采用氮气吸附、扫描电镜(SEM)、热重(TG)和紫外可见光谱(UV-vis)研究了CalixPOF的比表面积、微观结构、热稳定性和染料吸附效率等性能。结果表明:利用简单的溶剂原位傅克偶联反应可得到热稳定性良好、比表面积较大、可选择性吸附亚甲基蓝染料的CalixPOF,为自具主客体微腔的新型多孔聚合物网络的合成提供了新方法。

Synthesis of Calixarene-Based Porous Organic Framework(CalixPOF)in situ Solvent-Assisted Friedel-Crafts Coupling and Their Dye Adsorption Properties

Calixarene-based porous organic framework(CalixPOF) has been successfully synthesized by in situ solvent-assisted Friedel-Crafts coupling with 1,2-dichloroethane as solvent and coupling agent.The chemical component and molecular structure of CalixPOF were characterized by Fourier Transform Infrared Spectra (FT-IR)and solid-state Nuclear Magnetic Resonance spectroscopy (13C-NMR),which verified the reaction mechanism.The specific surface area,microstructure,thermal stability and dye adsorption efficiency of CalixPOF were investigated by nitrogen adsorption,Scanning Electron Microscopy (SEM),Thermogravimetry (TG) and Ultraviolet-visible spectrum (UV-vis).Results show that CalixPOF with good thermal stability and high specific surface area,selective adsorption to methylene blue dye,can be obtained in situ solvent-assisted Friedel-Crafts coupling.A new method for the synthesis of novel porous polymer networks with host-guest microcavities was provided.