Liquid-phase exfoliation of F-diamane-like nanosheets.

Fluorinated single-layer diamond ("F-diamond") is a new form of two-dimensional (2D) carbon allotrope. Herein, poly(dicarbon monofluoride) (C 2 F) n which is essentially made of stacked layers of "F-diamane" has been synthesized and exfoliated in a variety of solvents to yield well-dispersed ultrathin sheets. Microscopic and spectroscopic analyses revealed that the exfoliated nanosheets retained the "F-diamane"-like structure. The experimental results are also supported by density functional theory (DFT) calculations. Image 1 • Poly(dicarbon monofluoride) (C 2 F) n was synthesized by the fluorination of graphite. • The (C 2 F) n is essentially made of stacked layers of "F-diamane". • Liquid-phase exfoliation of (C 2 F) n yielded ultrathin nanosheets. • The "F-diamane"-like structure was retained after exfoliation. • Density functional theory calculations support the experimental results. [ABSTRACT FROM AUTHOR]