Highly Dispersible and Stable Anionic Boron Cluster–Graphene Oxide Nanohybrids |
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Authors: | Justo Cabrera‐González Dr. Laura Cabana Dr. Belén Ballesteros Dr. Gerard Tobias Dr. Rosario Núñez |
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Affiliation: | 1. Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Barcelona, Spain;2. Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and, The Barcelona Institute of Science and Technology, Barcelona, Spain |
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Abstract: | An efficient process to produce boron cluster–graphene oxide nanohybrids that are highly dispersible in water and organic solvents is established for the first time. Dispersions of these nanohybrid materials in water were extraordinarily stable after one month. Characterization of hybrids after grafting of appropriate cobaltabisdicarbollide and closo‐dodecaborate derivatives onto the surface of graphene oxide (GO) was done by FT‐IR, XPS, and UV/Vis. Thermogravimetric analysis (TGA) clearly shows a higher thermal stability for the modified‐GO nanohybrids compared to the parent GO. Of particular note, elemental mapping by energy‐filtered transmission electron microscopy (EFTEM) reveals that a uniform decoration of the graphene oxide surface with the boron clusters is achieved under the reported conditions. Therefore, the resulting nanohybrid systems show exceptional physico‐chemical and thermal properties, paving the way for an enhanced processability and further expanding the range of application for graphene‐based materials. |
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Keywords: | boron clusters dispersibility electron microscopy graphene oxide |
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