期刊
ACS APPLIED MATERIALS & INTERFACES
卷 10, 期 34, 页码 28860-28867出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b08739
关键词
2D nanosheets; MOF; exfoliation; application; solvent polarity; in situ visual test paper
资金
- Natural Science Foundation of China [21701023]
- Natural Science Foundation of Jiangsu Province [BK20170660]
- Fundamental Research Funds for the Central Universities [3207048427]
- PAPD of Jiangsu Higher Education Institutions
Through a facile-operating ultrasonic force-assisted liquid exfoliation technology, the single-layered two-dimensional (2D) [Co-(CNS)(2)(pyz)(2)](n) (pyz = pyrazine) nanosheets, with a thickness of sub-1.0 nm, have been prepared from the bulk precursors. The atomically thickness and the presence of abundant sulfur atoms with high electronegativity arrayed on the double surfaces of the sheets are making this kind of 2D MOF (metal-organic framework) nanosheets highly sensitive to intermolecular interactions. As a result, it can be well dispersed in all kinds of solvents to give a stable colloidal suspension that can be maintained for at least one month, accompanied by significant solvatochromic behavior and various optical properties, which thus have shown the potential to be practically applicated as in situ visual test paper for solvent identification and solvent polarity measurements. More importantly, combined with a smartphone, this kind of 2D-MOF nanosheets can be developed into in situ visual test paper to identify isomers and determine the polarity of mixed solvents quantitatively and qualitatively, suggesting the promising application of a portable, economical, and in situ visual test strategy in real world.
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