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author：

Qiu, Zhenli (Qiu, Zhenli.) [1] | Lei, Yufen (Lei, Yufen.) [2] | Lin, Xintong (Lin, Xintong.) [3] | Zhu, Jinman (Zhu, Jinman.) [4] | Zeng, Ruijin (Zeng, Ruijin.) [5] | Sa, Rongjian (Sa, Rongjian.) [6] | Tang, Dianping (Tang, Dianping.) [7] | Chen, Qiang (Chen, Qiang.) [8] | Chen, Yiting (Chen, Yiting.) [9]

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EI

Abstract：

A　photocurrent-polarity-switching　photoelectrochemical　(PEC)　biosensor　was　developed　for　the　ultrasensitive　detection　of　tobramycin　(TOB)　through　bipedal　DNA　walker　amplification　with　hemin-induced　photocurrent-polarity-switching　using　a　laser-induced　zinc　oxide/graphene　(ZnO/LIG)　photoelectrode.　Specifically,　the　ZnO/LIG　photoelectrode　was　synthesized　in　situ　by　a　laser　direct　writing　(LDW)　technique.　In　the　presence　of　TOB,　it　reacted　with　HP1　and　HP2　and　the　DNA　walker　response　was　activated　to　form　a　stable　hemin/G-quadruplex.　Furthermore,　hemin　induced　a　polarity　shift　in　the　photocurrent　signal.　The　developed　analytical　platform　exhibited　excellent　photoelectron　transport　performance　of　ZnO/LIG,　the　signal　amplification　effect　of　the　DNA　walker　strategy,　and　the　photocurrent-polarity-switching　ability　of　hemin.　Therefore,　it　demonstrated　satisfying　photocurrent　responses　to　the　target　TOB　within　the　working　range　of　20　nM-1.0　μM　at　a　low　detection　limit　of　5.43　nM.　The　PEC　platform　exhibited　good　stability,　reproducibility,　sufficient　sensitivity　and　high　selectivity　for　complex　experimental　samples.　Moreover,　the　photocurrent-polarity-switching　PEC　biosensor　improved　the　anti-interference　ability　and　avoided　false　positives　or　negatives.　©　2024　The　Royal　Society　of　Chemistry.

Keyword：

Amplification Biosensors DNA II-VI semiconductors Optical waveguides Photocurrents Photoelectrochemical cells Zinc oxide

Community：

  • [ 1 ] [Qiu, Zhenli]Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, College of Materials and Chemical Engineering, Minjiang University, Fuzhou; 350108, China
  • [ 2 ] [Qiu, Zhenli]College of Environment & Safety Engineering, Fuzhou University, Fuzhou; 350108, China
  • [ 3 ] [Lei, Yufen]Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, College of Materials and Chemical Engineering, Minjiang University, Fuzhou; 350108, China
  • [ 4 ] [Lei, Yufen]College of Environment & Safety Engineering, Fuzhou University, Fuzhou; 350108, China
  • [ 5 ] [Lin, Xintong]Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, College of Materials and Chemical Engineering, Minjiang University, Fuzhou; 350108, China
  • [ 6 ] [Lin, Xintong]College of Environment & Safety Engineering, Fuzhou University, Fuzhou; 350108, China
  • [ 7 ] [Zhu, Jinman]Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, College of Materials and Chemical Engineering, Minjiang University, Fuzhou; 350108, China
  • [ 8 ] [Zhu, Jinman]College of Environment & Safety Engineering, Fuzhou University, Fuzhou; 350108, China
  • [ 9 ] [Zeng, Ruijin]Key Laboratory of Analysis and Detection for Food Safety (MOE & Fujian Province), State Key Laboratory of Photocatalysis on Energy and Environment, Department of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 10 ] [Sa, Rongjian]Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, College of Materials and Chemical Engineering, Minjiang University, Fuzhou; 350108, China
  • [ 11 ] [Tang, Dianping]Key Laboratory of Analysis and Detection for Food Safety (MOE & Fujian Province), State Key Laboratory of Photocatalysis on Energy and Environment, Department of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 12 ] [Chen, Qiang]Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, College of Materials and Chemical Engineering, Minjiang University, Fuzhou; 350108, China
  • [ 13 ] [Chen, Yiting]Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, College of Materials and Chemical Engineering, Minjiang University, Fuzhou; 350108, China
  • [ 14 ] [Chen, Yiting]College of Environment & Safety Engineering, Fuzhou University, Fuzhou; 350108, China

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Source ：

Journal of Materials Chemistry B

ISSN： 2050-750X

Year： 2023

Issue： 4

Volume： 12

Page： 984-990

6 . 1

JCR@2023

6 . 1 0 0

JCR@2023

JCR Journal Grade：1

CAS Journal Grade：3

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count： 1

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 3

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