PMID- 29801604
OWN - NLM
STAT- MEDLINE
DCOM- 20180925
LR  - 20191210
IS  - 1873-4324 (Electronic)
IS  - 0003-2670 (Linking)
VI  - 1025
DP  - 2018 Sep 26
TI  - Reduced graphene oxide/nile blue/gold nanoparticles complex-modified glassy 
      carbon electrode used as a sensitive and label-free aptasensor for ratiometric 
      electrochemical sensing of dopamine.
PG  - 154-162
LID - S0003-2670(18)30415-X [pii]
LID - 10.1016/j.aca.2018.03.036 [doi]
AB  - In this work, glassy carbon electrode (GCE) surface was modified by drop-coating 
      graphene oxide (GO) and nile blue (NB) to form GO/NB/GCE. By using a one-step 
      coreduction treatment under cyclic voltammetry (CV) scanning, gold nanoparticles 
      (AuNPs) were electrodeposited onto GO/NB/GCE surface, simultaneously generating 
      reduced GO (rGO). AuNPs from the prepared rGO/NB/AuNPs/GCE was combined with 
      5'-SH-terminated aptamer of dopamine (DA) via Au-S coupling to fabricate 
      aptamer-rGO/NB/AuNPs/GCE system. DA specifically combined with its aptamer 
      modified on rGO/NB/AuNPs/GCE surface. CV, electrochemical impedance spectroscopy, 
      square wave voltammetry responses of this system as the working electrode were 
      measured. With the addition of DA, the peak current intensities located 
      at -0.45 V (I(NB)) and 0.15 V (I(DA)) showed gradually decreased and increased 
      changes, respectively. There was a good linear (R(2) = 0.9922) relationship 
      between lg(I(DA)/I(NB)) and the logarithm of DA concentration (lgC(DA)) in the 
      C(DA) range from 10 nM to 0.2 mM, showing a low detection limit of 1 nM. This 
      system as a novel, sensitive and label-free aptasensor was used for ratiometric 
      electrochemical sensing of DA. Experimental results verified that this aptasensor 
      possessed high stability, selectivity and sensitivity towards DA detection, over 
      potential interferents. This aptasensor efficiently determined DA in real 
      biological samples, together with high detection recoveries of 97.0-104.0%.
CI  - Copyright (c) 2018 Elsevier B.V. All rights reserved.
FAU - Jin, Hui
AU  - Jin H
AD  - College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for 
      Collaborative Research of Carbon Nanomaterials, Laboratory of Fiber Materials and 
      Modern Textile, The Growing Base for State Key Laboratory, Qingdao University, 
      Shandong, 266071, PR China.
FAU - Zhao, Chunqin
AU  - Zhao C
AD  - College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for 
      Collaborative Research of Carbon Nanomaterials, Laboratory of Fiber Materials and 
      Modern Textile, The Growing Base for State Key Laboratory, Qingdao University, 
      Shandong, 266071, PR China.
FAU - Gui, Rijun
AU  - Gui R
AD  - College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for 
      Collaborative Research of Carbon Nanomaterials, Laboratory of Fiber Materials and 
      Modern Textile, The Growing Base for State Key Laboratory, Qingdao University, 
      Shandong, 266071, PR China. Electronic address: guirijun@163.com.
FAU - Gao, Xiaohui
AU  - Gao X
AD  - College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for 
      Collaborative Research of Carbon Nanomaterials, Laboratory of Fiber Materials and 
      Modern Textile, The Growing Base for State Key Laboratory, Qingdao University, 
      Shandong, 266071, PR China.
FAU - Wang, Zonghua
AU  - Wang Z
AD  - College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for 
      Collaborative Research of Carbon Nanomaterials, Laboratory of Fiber Materials and 
      Modern Textile, The Growing Base for State Key Laboratory, Qingdao University, 
      Shandong, 266071, PR China. Electronic address: wangzonghua@qdu.edu.cn.
LA  - eng
PT  - Evaluation Study
PT  - Journal Article
DEP - 20180329
PL  - Netherlands
TA  - Anal Chim Acta
JT  - Analytica chimica acta
JID - 0370534
RN  - 0 (Aptamers, Nucleotide)
RN  - 0 (Oxazines)
RN  - 0 (Oxides)
RN  - 2381-85-3 (Nile Blue)
RN  - 7440-44-0 (Carbon)
RN  - 7440-57-5 (Gold)
RN  - 7782-42-5 (Graphite)
RN  - VTD58H1Z2X (Dopamine)
SB  - IM
MH  - Aptamers, Nucleotide/*chemistry
MH  - Biosensing Techniques/instrumentation/*methods
MH  - Carbon/chemistry
MH  - Dopamine/*blood
MH  - Electrochemical Techniques/instrumentation/methods
MH  - Electrodes
MH  - Equipment Design
MH  - Gold/*chemistry
MH  - Graphite/*chemistry
MH  - Humans
MH  - Limit of Detection
MH  - Metal Nanoparticles/*chemistry
MH  - Oxazines/*chemistry
MH  - Oxides/chemistry
MH  - Young Adult
OTO - NOTNLM
OT  - Aptasensor
OT  - Dopamine
OT  - Electrochemical sensor
OT  - Nile blue
OT  - Ratiometric
EDAT- 2018/05/29 06:00
MHDA- 2018/09/27 06:00
CRDT- 2018/05/27 06:00
PHST- 2017/12/08 00:00 [received]
PHST- 2018/02/25 00:00 [revised]
PHST- 2018/03/12 00:00 [accepted]
PHST- 2018/05/27 06:00 [entrez]
PHST- 2018/05/29 06:00 [pubmed]
PHST- 2018/09/27 06:00 [medline]
AID - S0003-2670(18)30415-X [pii]
AID - 10.1016/j.aca.2018.03.036 [doi]
PST - ppublish
SO  - Anal Chim Acta. 2018 Sep 26;1025:154-162. doi: 10.1016/j.aca.2018.03.036. Epub 
      2018 Mar 29.