Nonpolar Organic Dispersion of 2D Ti3C2Tx MXene flakes via simulataneous interfacial chemical grafting and phase transfer method
- Nonpolar Organic Dispersion of 2D Ti3C2Tx MXene flakes via simulataneous interfacial chemical grafting and phase transfer method
- 구종민; 조상호; 고태윤; 김대신; 김혜림; 이건희
- Issue Date
- ACS Nano
- VOL 13-13828
- Herein, we demonstrate a simple and versatile way for preparing stable Ti3C2Tx MXene dispersions in nonpolar organic solvents through a simultaneous interfacial chemical grafting reaction and phase transfer method. Alkylphosphonic acid ligands were chemically grafted on the hydroxyl terminal groups of Ti3C2Tx flakes at the liquid− liquid interface between water and water-immiscible organic medium to form a covalent Ti− O− P bond via interfacial nucleophilic addition and sequential condensation reaction at room temperature; the surface-functionalized Ti3C2Tx flakes concurrently migrated from the aqueous phase to the organic phase. Unlike conventional surface chemical modification methods that require many complex and tedious steps, this is a simple and easy process for fabricating a Ti3C2Tx organic dispersion in various organic solvents, from highly polar to nonpolar. The nonpolar Ti3C2Tx dispersion in chloroform also exhibits strong oxidation resistance and stable long-term storage. This approach provides an opportunity for preparing MXene nanocomposites with nonpolar polymeric matrices that are soluble in organic media for future applications such as stretchable electrode.
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