样品前处理吸附介质的记忆效应、解离速度慢是导致大气有机污染物在线监测时间分辨率差、误差大的重要原因。本项目提出利用PNIPAM、PMMA-PEG的温敏性及双亲性，结合β-CD超分子的可逆转换特性，通过ATRP、Click手段，功能化MWCNTs，构筑具有双开-关性能的程序控制分离介质。重点探讨MWCNTs表面功能膜CD-PNIPAM/Ad-PMMA-PEG的双重敏感性。揭示各组成结构单元对MWCNTs-CD-PNIPAM/Ad-PMMA-PEG微观结构与LCST的影响规律；阐明功能化MWCNTs的分配-包结双作用模式在不同极性溶剂中的程序释放机制。通过调整CD取代基位点及聚合物分子量，实现CD-PNIPAM与PMMA-PEG的协同作用，提高MWCNTs-CD-PNIPAM/Ad-PMMA-PEG的响应速度。为功能化MWCNTs在大气有机污染物在线分析中的应用提供理论基础和技术支撑。

In recent years, many environments organic matter significantly contributes to the compound of atmosphere and aerosol particles, and the problem of atmospheric environment pollution is becoming more serious. Detailed chemical characterization is crucial to help us to understand the formation process, source identification and properties of organic compounds in the atmosphere. The composition of organic compounds in the atmosphere is very complex, and the content is very low, therefore, air pollutants sample requires to be pretreated by various methods to reduce matrix interference and increase the concentration of the target substance. However, current off-line analytical methods are time-consuming and also subjected to artifacts during compounds collection and storage. Above all, it is an urgent affair to establish a rapid, sensitive and accurate on-line atmospheric environmental monitoring methods, and it is critical to construct a kind of multi-functional adsorption material.. In the present project, we propose a MWCNTs functional adsorption materials, which combines the thermo-responsive properties of PNIPAM and amphiphilicity of PMMA-PEG with the reversible properties of β-CD supramolecular self-assembly system. The MWCNTs surface is functionalized by a type of non-covalently connected block polymer, in which the polymer chains of β-CD-PNIPAM and Ad-PMMA-PEG are prepared via click chemistry and ATRP method, and they are connected by inclusion interaction between β-CD and ADA. The LCST and microstructures of MWCNTs-β-CD-PNIPAM/Ad-PMMA-PEG can be tuned by controlling the substituents sites of β-CD and the composition of PNIPAM and PMMA-PEG. We expect the β-CD-PNIPAM/Ad-PMMA-PEG complexes will respond to the external stimulation of apolar solvent or temperature via different mechanisms: (1) at temperatures below the LCST, the hydrophobic PNIPAM becomes hydrophilic. (2) The block polymer chain of PMMA-PEG exhibits reversible conformation transition and the complexes of β-CD-PNIPAM/Ad-PMMA-PEG exhibits reversible assembly behavior in different polar solvent. The constructed MWCNTs functional adsorption materials should achieve the acceleration effect of dual-responsive of β-CD-PNIPAM and PMMA-PEG.. Fabrication of multi-sensitive systems with fine-tunable release properties is considered to be a very important future direction. This study will provides the theoretical basis and technical support for the application of MWCNTs-β-CD-PNIPAM/PMMA-PEG on organic pollutants on-line analysis system.