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学科主题物理化学
Electrochemical biosensing platform based on amino acid ionic liquid functionalized graphene for ultrasensitive biosensing applications
Lu, Xianbo; Wang, Xue; Jin, Jing; Zhang, Qing; Chen, Jiping; Lu XB(卢宪波); Chen JP(陈吉平)
关键词Biosensor Graphene Ionic Liquids Electronic Conductivity Tyrosinase
刊名BIOSENSORS & BIOELECTRONICS
2014-12-15
DOI10.1016/j.bios.2014.06.036
62期:1页:134-139
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]Biophysics ; Biotechnology & Applied Microbiology ; Chemistry, Analytical ; Electrochemistry ; Nanoscience & Nanotechnology
研究领域[WOS]Biophysics ; Biotechnology & Applied Microbiology ; Chemistry ; Electrochemistry ; Science & Technology - Other Topics
关键词[WOS]GLASSY-CARBON ELECTRODE ; WATER-SOLUBLE GRAPHENE ; TYROSINASE BIOSENSOR ; GOLD NANOPARTICLES ; MESOPOROUS CARBON ; RAPID DETECTION ; COMPOSITE ; CHITOSAN ; CATECHOL ; ELECTROCATALYSIS
英文摘要In this study, a facile non-covalent method was developed for preparing water-soluble graphene with excellent electronic conductivity. Room temperature ionic liquids (ILs) with high ionic conductivity were used for the non-covalent surface functionalization of graphene through pi-pi stacking interactions. Compared to other ILs used, amino acid ionic liquids (AAILs) were found to be the most effective for improving the dispersion of graphene in water phase. Electrochemical and spectroscopic results confirmed that the obtained AAIL functionalized GR can retain the excellent electronic conductivity of pristine graphene without damaging the graphene lattice. The obtained water-soluble graphene (GR-AAIL) was exemplified to fabricate an electrochemical biosensor using tyrosinase as a model enzyme, and the sensitivity (12,600 mA cm(-2) M-1) of GR-AAIL based biosensor was about 17 times higher than that of graphene oxide and other nanomaterial based biosensor, displaying its unprecedented high sensitivity for biosensing. The detection limit for catechol (one important environmental pollutant) reached as low as 8 nM with a response time of 3 s and a linear range from 25 nM to 11,100 nM. The AAIL-GR based biosensor also demonstrated good reproducibility, repeatability, selectivity, long-term stability and high recovery for catechol detection. Amino acid ionic liquid functionalized graphene proves to be a robust and versatile electrochemical biosensing platform for fabricating biosensors with excellent performance. (C) 2014 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000340334800022
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/144095
专题中国科学院大连化学物理研究所
通讯作者Lu XB(卢宪波); Chen JP(陈吉平)
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China
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Lu, Xianbo,Wang, Xue,Jin, Jing,et al. Electrochemical biosensing platform based on amino acid ionic liquid functionalized graphene for ultrasensitive biosensing applications[J]. BIOSENSORS & BIOELECTRONICS,2014,62(1):134-139.
APA Lu, Xianbo.,Wang, Xue.,Jin, Jing.,Zhang, Qing.,Chen, Jiping.,...&陈吉平.(2014).Electrochemical biosensing platform based on amino acid ionic liquid functionalized graphene for ultrasensitive biosensing applications.BIOSENSORS & BIOELECTRONICS,62(1),134-139.
MLA Lu, Xianbo,et al."Electrochemical biosensing platform based on amino acid ionic liquid functionalized graphene for ultrasensitive biosensing applications".BIOSENSORS & BIOELECTRONICS 62.1(2014):134-139.
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