Synthesis and exfoliation of isocyanate-treated graphene oxide nanoplatelets
Synthesis and exfoliation of isocyanate-treated graphene oxide nanoplatelets
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DOI：
10.1016/j.carbon.2006.06.004
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发表时间：
2006-12-01
期刊：
影响因子：
10.9
通讯作者：
Ruoff, Rodney S.
中科院分区：
文献类型：
--
作者：
Stankovich, Sasha;Piner, Richard D.;Ruoff, Rodney S.
通过用有机异氰酸酯处理氧化石墨（GO）制备了多种功能化氧化石墨。这些经异氰酸酯处理的氧化石墨（iGOs）随后可剥离成功能化氧化石墨烯纳米片，其能在极性非质子溶剂中形成稳定的分散体。通过傅里叶变换红外光谱和元素分析对iGOs进行表征表明，异氰酸酯处理分别通过形成酰胺和氨基甲酸酯导致GO中的羧基和羟基功能化。GO的功能化程度可通过异氰酸酯的反应活性或反应时间来控制。当与功能化异氰酸酯一起使用时，所述方法能够制备具有不同表面官能团的氧化石墨烯纳米片。（c）2006爱思唯尔有限公司。保留所有权利。
A number of functionalized graphite oxides were prepared by treatment of graphite oxide (GO) with organic isocyanates. These isocyanate-treated GOs (iGOs) can then be exfoliated into functionalized graphene oxide nanoplatelets that can form a stable dispersion in polar aprotic solvents. Characterization of iGOs by FT-IR spectroscopy and elemental analysis suggested that the isocyanate treatment results in the functionalization of the carboxyl and hydroxyl groups in GO via formation of amides and carbamate esters, respectively. The degree of GO functionalization can be controlled via either the reactivity of the isocyanate or the reaction time. When used with functionalized isocyanates, the described methodology allows for the elaboration of graphene oxide nanoplatelets with different surface functional groups. (c) 2006 Elsevier Ltd. All rights reserved.