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author:

Qiu, Suyan (Qiu, Suyan.) [1] | Gao, Sen (Gao, Sen.) [2] | Liu, Qida (Liu, Qida.) [3] | Lin, Zhenyu (Lin, Zhenyu.) [4] (Scholars:林振宇) | Qiu, Bin (Qiu, Bin.) [5] (Scholars:邱彬) | Chen, Guonan (Chen, Guonan.) [6] (Scholars:陈国南)

Indexed by:

EI Scopus SCIE

Abstract:

Copper(I) species can be acquired from the reduction of copper(II) by ascorbic acid (AA) in situ, and which in turn quantitative catalyze the azides and alkynes cycloaddition reaction. In this study, propargyl-functionalized ferrocene (propargyl-functionalized Fc) has been modified on the electrode through reacting with azide terminal modified Au electrode via copper(I) catalyzed azides and alkynes cycloaddition (CuAAC) reaction. The electrochemical impedance spectroscopy (EIS) measurement has been applied to test the electron transfer resistance of the Au electrode before and after click reaction. The changes of the fractional surface coverage (theta) with different AA concentrations are characterized. It is found that the theta value has a linear response to the logarithm of AA concentration in the range of 5.0 pmol/L to 1.0 nmol/L with the detection limits of 2.6 pmol/L The sensor shows a good stability and selectivity. And it has been successfully applied to the AA detection in the real samples (urine) with satisfactory results. (C) 2011 Elsevier B.V. All rights reserved.

Keyword:

Ascorbic acid Click chemistry Copper(I) catalyzed azides and alkynes cycloaddition Electrochemical impedance spectroscopy Fractional surface coverage (theta)

Community:

  • [ 1 ] [Qiu, Suyan]Fuzhou Univ, Fujian Prov Key Lab Anal & Detect Technol Food Sa, MOE Key Lab Anal & Detect Food Safety, Dept Chem, Fuzhou 350002, Fujian, Peoples R China
  • [ 2 ] [Gao, Sen]Fuzhou Univ, Fujian Prov Key Lab Anal & Detect Technol Food Sa, MOE Key Lab Anal & Detect Food Safety, Dept Chem, Fuzhou 350002, Fujian, Peoples R China
  • [ 3 ] [Lin, Zhenyu]Fuzhou Univ, Fujian Prov Key Lab Anal & Detect Technol Food Sa, MOE Key Lab Anal & Detect Food Safety, Dept Chem, Fuzhou 350002, Fujian, Peoples R China
  • [ 4 ] [Qiu, Bin]Fuzhou Univ, Fujian Prov Key Lab Anal & Detect Technol Food Sa, MOE Key Lab Anal & Detect Food Safety, Dept Chem, Fuzhou 350002, Fujian, Peoples R China
  • [ 5 ] [Chen, Guonan]Fuzhou Univ, Fujian Prov Key Lab Anal & Detect Technol Food Sa, MOE Key Lab Anal & Detect Food Safety, Dept Chem, Fuzhou 350002, Fujian, Peoples R China
  • [ 6 ] [Liu, Qida]Xi An Jiao Tong Univ, MOE Key Lab Strength & Vibrat, Xian 710049, Peoples R China

Reprint 's Address:

  • 林振宇

    [Lin, Zhenyu]Fuzhou Univ, Fujian Prov Key Lab Anal & Detect Technol Food Sa, MOE Key Lab Anal & Detect Food Safety, Dept Chem, Fuzhou 350002, Fujian, Peoples R China

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Source :

BIOSENSORS & BIOELECTRONICS

ISSN: 0956-5663

Year: 2011

Issue: 11

Volume: 26

Page: 4326-4330

5 . 6 0 2

JCR@2011

1 0 . 7 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 52

SCOPUS Cited Count: 54

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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