DICP OpenIR
Subject Area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)
KeywordBiosensor Graphene Ionic Liquids Electronic Conductivity Tyrosinase
Source PublicationBIOSENSORS & BIOELECTRONICS
2014-12-15
DOI10.1016/j.bios.2014.06.036
Volume62Issue:1Pages:134-139
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
WOS SubjectBiophysics ; Biotechnology & Applied Microbiology ; Chemistry, Analytical ; Electrochemistry ; Nanoscience & Nanotechnology
WOS Research AreaBiophysics ; Biotechnology & Applied Microbiology ; Chemistry ; Electrochemistry ; Science & Technology - Other Topics
WOS KeywordGLASSY-CARBON ELECTRODE ; WATER-SOLUBLE GRAPHENE ; TYROSINASE BIOSENSOR ; GOLD NANOPARTICLES ; MESOPOROUS CARBON ; RAPID DETECTION ; COMPOSITE ; CHITOSAN ; CATECHOL ; ELECTROCATALYSIS
AbstractIn 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.
Language英语
WOS IDWOS:000340334800022
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/144095
Collection中国科学院大连化学物理研究所
Corresponding AuthorLu XB(卢宪波); Chen JP(陈吉平)
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
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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