Water-Soluble Graphene Covalently Functionalized by Biocompatible Poly-l-lysine

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• 作者：Changsheng Shan ; Huafeng Yang ; Dongxue Han ; Qixian Zhang ; Ari Ivaska ; Li Niu
• 刊名：Langmuir
• 出版年：2009
• 出版时间：October 20, 2009
• 年：2009
• 卷：25
• 期：20
• 页码：12030-12033
• 全文大小：790K
• 年卷期：v.25,no.20(October 20, 2009)
• ISSN：1520-5827

文摘

Graphene sheets functionalized covalently with biocompatible poly-l-lysine (PLL) were first synthesized in an alkaline solution. PLL-functionalized graphene is water-soluble and biocompatible, which makes it a novel material promising for biological applications. Graphene sheets played an important role as connectors to assemble these active amino groups of poly-l-lysine, which provided a very biocompatible environment for further functionalization, such as attaching bioactive molecules. As an example, an amplified biosensor toward H₂O₂ based on linking peroxidase onto PLL-functionalized graphene was investigated.