期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 12, 期 3, 页码 402-405出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2010.01.004
关键词
Graphene; PDDA; Room temperature ionic liquid; Biosensors
资金
- National Natural Science Foundation of China [20635020, 20775030]
- 973 Program [2006CB933201]
The functionalized graphene nanosheets (PDDA-G) with poly(diallyldimethylammonium chloride) (PDDA) were synthesized and used to combine with room temperature ionic liquid (RTIL). The resulting RTIL/PDDA-G composite displayed an enhanced capability for the immobilization of hemoglobin to realize its direct electrochemistry. Moreover, the RTIL/PDDA-G based biosensor exhibited excellent electrocatalytic activity for the detection of nitrate with a wide linear range from 0.2 to 32.6 mu M and a low detection limit of 0.04 mu M at 3 sigma. This work opens a new way to functionalized graphene nanosheets with good biocompatibility and solubility in biosensors. (C) 2010 Elsevier B.V. All rights reserved.
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