Functional Graphene by Thiol‐ene Click Chemistry |
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| Authors: | Dr Nguyen Dang Luong Dr Le Hoang Sinh Dr Leena‐Sisko Johansson Dr Joseph Campell Prof Jukka Seppälä |
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| Affiliation: | 1. Department of Biotechnology and Chemical Technology, Aalto University School of Chemical Technology, Espoo, Aalto, Finland;2. Department of Forest Products Technology, Aalto University School of Chemical Technology, Espoo, Aalto, Finland |
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| Abstract: | Thiol‐ene click reaction was successfully employed for chemical modification of graphene oxide (GO) by one‐step synthesis. Herein, 2,2‐azobis(2‐methylpropionitrile) (AIBN) was used as thermal catalyst and cysteamine hydrochloride (HS?(CH2)2?NH2HCl) was used as thiol‐containing compound, which is incorporated to GO surface upon reaction with the C=C bonds. The hydrochloride acts as protecting group for the amine, which is finally eliminated by adding sodium hydroxide. The modified GO contains both S‐ and N‐containing groups (NS‐GO). We found that NS‐GO sheets form good dispersion in water, ethanol, and ethylene glycol. These graphene dispersions can be processed into functionalized graphene film. Besides, it was demonstrated that NS‐GO was proved to be an excellent host matrix for platinum nanoparticles. The developed method paves a new way for graphene modification and its functional nanocomposites. |
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| Keywords: | chemical modification graphene nanomaterials platinum thiol-ene reactions |
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