Graphene Oxide Sheets Chemically Cross-Linked by Polyallylamine
Graphene Oxide Sheets Chemically Cross-Linked by Polyallylamine
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DOI：
10.1021/jp907613s
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发表时间：
2009-09-10
影响因子：
3.7
通讯作者：
Ruoff, Rodney S.
中科院分区：
文献类型：
--
作者：
Park, Sungjin;Dikin, Dmitriy A.;Ruoff, Rodney S.
我们报道了将聚烯丙基胺加入氧化石墨烯的水悬浮液中，然后对混合物进行超声处理，得到了化学交联的氧化石墨烯的均一水相胶体悬浮液。这是第一个产生交联型石墨烯薄片的均匀胶体悬浮液的例子。作为这种胶体悬浮液的用途的一个例证，从这种交联型氧化石墨烯薄片的悬浮液中简单过滤而成的“纸”材料样品显示出极好的机械硬度和强度。
We report that a homogeneous aqueous colloidal suspension of chemically cross-linked graphene oxide sheets was generated by addition of polyallylamine to an aqueous suspension of graphene oxide sheets followed by sonication of the mixture. This is the first example for producing a homogeneous colloidal suspension of cross-linked graphene sheets. As a demonstration of-the utility of such a colloidal suspension, "paper" material samples made by simple filtration from such a suspension of cross-linked graphene oxide sheets showed excellent mechanical stiffness and strength.