Immobilizing water-soluble graphene quantum dots with gold nanoparticles for a low potential electrochemiluminescence immunosensor - Details

author：

Dong, Y. (Dong, Y..) ^[1] | Wu, H. (Wu, H..) ^[2] | Shang, P. (Shang, P..) ^[3] | Zeng, X. (Zeng, X..) ^[4] | Chi, Y. (Chi, Y..) ^[5]

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Abstract：

Hydrazide-modified　graphene　quantum　dots　(HM-GQDs)　obtained　by　refluxing　GQDs　with　hydrazine　hydrate　were　hybridized　with　gold　nanoparticles　(AuNPs)　through　a　redox　reaction　between　HM-GQDs　and　AuCl4-.　The　obtained　nano-hybrids　(HM-GQD-AuNPs)　possess　the　unique　electrochemiluminescence　(ECL)　properties　of　HM-GQDs　and　the　easy　self-assembly　with　some　bio-molecules　of　AuNPs,　which　have　great　potential　applications　in　bio-sensors.　HM-GQD-AuNPs　were　modified　on　a　glassy　carbon　electrode　to　develop　a　novel　ECL　immunosensor　of　carcinoembryonic　antigen　(CEA)　as　a　model　target　analyte.　Due　to　the　increment　of　electron-transfer　resistance　after　immunoreaction,　the　ECL　intensity　decreased　as　the　concentration　of　CEA　was　increased.　The　linear　response　range　was　between　0.02　and　80　ng　mL-1,　and　the　detection　limit　was　0.01　ng　mL-1.　©　The　Royal　Society　of　Chemistry.

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[ 1 ] [Dong, Y.]Ministry of Education, Key Laboratory of Analysis and Detection Technology for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou UniversityFujian 350108, China
[ 2 ] [Wu, H.]Ministry of Education, Key Laboratory of Analysis and Detection Technology for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou UniversityFujian 350108, China
[ 3 ] [Shang, P.]Ministry of Education, Key Laboratory of Analysis and Detection Technology for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou UniversityFujian 350108, China
[ 4 ] [Zeng, X.]Ministry of Education, Key Laboratory of Analysis and Detection Technology for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou UniversityFujian 350108, China
[ 5 ] [Chi, Y.]Ministry of Education, Key Laboratory of Analysis and Detection Technology for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou UniversityFujian 350108, China

Reprint 's Address：

[Chi, Y.]Ministry of Education, Key Laboratory of Analysis and Detection Technology for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou UniversityChina

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Source ：

Nanoscale

ISSN： 2040-3364

Year： 2015

Issue： 39

Volume： 7

Page： 16366-16371

7 . 7 6

JCR@2015

5 . 8 0 0

JCR@2023

ESI HC Threshold：200

JCR Journal Grade：1

CAS Journal Grade：2

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 1

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