石墨烯
点击化学
硫醇
化学
乙二醇
表面改性
氧化物
氢氧化钠
烯类反应
纳米复合材料
盐酸盐
催化作用
纳米颗粒
高分子化学
有机化学
材料科学
纳米技术
物理化学
作者
Nguyen Dang Luong,Le Hoang Sinh,Leena‐Sisko Johansson,Joseph Campell,Jukka Seppälä
标识
DOI:10.1002/chem.201405734
摘要
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−(CH 2 ) 2 −NH 2 HCl) 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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