1
|
Kim D, Ko TY, Kim H, Lee GH, Cho S, Koo CM. Nonpolar Organic Dispersion of 2D Ti 3C 2T x MXene Flakes via Simultaneous Interfacial Chemical Grafting and Phase Transfer Method. ACS Nano 2019; 13:13818-13828. [PMID: 31738507 DOI: 10.1021/acsnano.9b04088] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
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.
Collapse
Affiliation(s)
- Daesin Kim
- KU-KIST Graduate School of Converging Science and Technology , Korea University , Seoul 02841 , Republic of Korea
- Materials Architecturing Research Center , Korea Institute of Science and Technology , Seoul 02792 , Republic of Korea
| | - Tae Yun Ko
- Materials Architecturing Research Center , Korea Institute of Science and Technology , Seoul 02792 , Republic of Korea
| | - Hyerim Kim
- KU-KIST Graduate School of Converging Science and Technology , Korea University , Seoul 02841 , Republic of Korea
- Materials Architecturing Research Center , Korea Institute of Science and Technology , Seoul 02792 , Republic of Korea
| | - Gun Hee Lee
- Materials Architecturing Research Center , Korea Institute of Science and Technology , Seoul 02792 , Republic of Korea
| | - Sangho Cho
- Materials Architecturing Research Center , Korea Institute of Science and Technology , Seoul 02792 , Republic of Korea
- Division of Nano & Information Technology, KIST School , Korea University of Science and Technology , Seoul 02792 , Republic of Korea
| | - Chong Min Koo
- KU-KIST Graduate School of Converging Science and Technology , Korea University , Seoul 02841 , Republic of Korea
- Materials Architecturing Research Center , Korea Institute of Science and Technology , Seoul 02792 , Republic of Korea
- Division of Nano & Information Technology, KIST School , Korea University of Science and Technology , Seoul 02792 , Republic of Korea
| |
Collapse
|