Nonpolar Organic Dispersion of 2D Ti3C2Tx MXene Flakes via Simultaneous Interfacial Chemical Grafting and Phase Transfer Method
- Authors
- Kim, Daesin; Ko, Tae Yun; Kim, Hyerim; Lee, Gun Hee; Cho, Sangho; Koo, Chong Min
- Issue Date
- 12월-2019
- Publisher
- AMER CHEMICAL SOC
- Keywords
- MXene; two-dimensional nanomaterials; interfacial condensation reaction; phase transfer; nonpolar organic dispersion
- Citation
- ACS NANO, v.13, no.12, pp.13818 - 13828
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS NANO
- Volume
- 13
- Number
- 12
- Start Page
- 13818
- End Page
- 13828
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/61487
- DOI
- 10.1021/acsnano.9b04088
- ISSN
- 1936-0851
- 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.
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Collections - Graduate School > KU-KIST Graduate School of Converging Science and Technology > 1. Journal Articles
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