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Indirect functionalization of multiwalled carbon nano tubes through non-covalent interaction of functional polyesters
Polymer ( IF 4.6 ) Pub Date : 2018-03-10 , DOI: 10.1016/j.polymer.2018.03.017
P. Sinem Omurtag , Burcu Alkan , Hakan Durmaz , Gurkan Hizal , Umit Tunca

Synthetic approach was demonstrated to obtain a series of polyesters containing electron deficient internal alkyne units stemmed from acetylene dicarboxylic acid in the main backbone. Consequently, polyesters were made use of a polymeric platform in copper free cycloaddition reaction like, Huisgen type 1,3-dipolar cycloaddition in order to have pendant functional groups, pyrene, pyrene/COOH, pyrene/OH, and pyrene/C≡CH using organic azides. A pyrene pendant unit of these polyesters was non-covalently interacted with the surface of multiwalled carbon nanotubes (MWCNTs) via π–π stacking as shown by high-resolution transmission electron microscopy (HRTEM), thermogravimetric analysis (TGA) and UV–visible spectroscopy. Therefore, MWCNTs were indirectly functionalized using pre-functional polyesters that possess pendant functional groups: pyrene or pyrene together with -COOH, -OH, and -C≡CH. Moreover, the dispersion stability of modified CNTs was investigated in frequently used organic solvents.



中文翻译:

通过功能性聚酯的非共价相互作用将多壁碳纳米管间接功能化

已证明合成方法获得了一系列聚酯,这些聚酯在主骨架中包含源自乙炔二羧酸的缺电子的内部炔烃单元。因此,聚酯通过在无铜环加成反应中使用聚合物平台(例如,Huisgen类型的1,3-偶极环加成)来制备,以使其具有侧基官能团,pyr,pyr / COOH,pyr / OH和pyr /C≡CH。有机叠氮化物。这些聚酯的pyr侧基单元通过π-π堆叠与多壁碳纳米管(MWCNT)的表面非共价相互作用,如高分辨率透射电子显微镜(HRTEM),热重分析(TGA)和紫外可见光谱法所示。因此,使用具有侧链官能团的预官能聚酯将MWCNT间接官能化:or或pyr与-COOH,-OH和-C≡CH一起使用。此外,研究了改性碳纳米管在常用有机溶剂中的分散稳定性。

更新日期:2018-03-10
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