Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 1, Issue 1, Pages 277-283Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jz9002108
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Funding
- NASA [NNH06CC03B]
- Langley Aerospace Research Summer Scholars (LARSS)
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Hexagonal boron nitride (h-BN), the isoelectric analogue of graphite, was functionalized using lipophilic and hydrophilic amine molecules. The functionalization induced the exfoliation of the layered structure of h-BN, resulting in few-layered and monolayered nanosheets soluble in common organic solvents and/or water. The soluble h-BN nanosheets were characterized using various solution-phase and solid-state techniques. For example, the optical extinction coefficients of the h-BN nanosheets in homogeneous dispersions were estimated to be much lower than those of graphene sheets, confirming their low-colored nature. Solution-phase NMR spectroscopy supported the mechanism that the amino groups of the functional molecules complex to the electron-deficient boron atoms on the h-BN nanosheet surfaces in terms of Lewis acid base interactions. Results from other microscopic and spectroscopic characterizations, Of these functionalized two-dimensional nanomaterials are also presented, and the implications of the reported versatile and effective functionalization strategy are discussed.
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