Layer-by-layer Assembled Multilayers of Graphene/Mono-(6-amino-6-deoxy)-β-cyclodextrin for Detection of Dopamine  

作　　者：Lin Tan Guo Wang Nali Chen Jianqiang Zhang Huixia Feng 

机构地区：[1]College of Petrochemical Technology,Lanzhou University of Technology,Lanzhou,Gansu 730050,China

出　　处：《Chinese Journal of Chemistry》2015年第2期185-191,共7页中国化学（英文版）

基　　金：support from the Na-tional Natural Science Foundation of China(NSFC,Nos.51063003,21364004);the Ministry of Science and Technology Project(No.2009GJG10041);the Funda-mental Research Funds for the Universities of Gansu(No.1105ZTC136);the Natural Science Foundation of Gansu Province(No.1208RJZA173);the Doctoral Research Start-funded Projects of Lanzhou University of Technology.

摘　　要：Graphene/mono-(6-amino-6-deoxy)-β-cyclodextrin multilayer films composed of graphene sheet(GS)and mono-(6-amino-6-deoxy)-β-cyclodextrin(NH_(2)-β-CD)were fabricated easily by two steps.First,negatively charged graphene oxide(GO)and positively charged mono-(6-amino-6-deoxy)-β-cyclodextrin(NH_(2)-β-CD)were layer-by-layer(LBL)self-assembled on glassy carbon electrode(GCE)modified with a layer of poly(diallyldimethylammo-nium chloride)(PDDA).Then graphene/mono-(6-amino-6-deoxy)-β-cyclodextrin(GS/NH_(2)-β-CD)multilayer films were built up by electrochemical reduction of graphene oxide/mono-(6-amino-6-deoxy)-β-cyclodextrin(GO/NH_(2)-β-CD).Combining the high surface area of GS and the active recognition sites onβ-cyclodextrin(β-CD),the GS/NH_(2)-β-CD multilayer films show excellent electrochemical sensing performance for the detection of DA with an extraordinary broad linear range from 2.53 to 980.05μmol•L^(−1).This study offers a simple route to the controlla-ble formation of graphene-based electrochemical sensor for the detection of DA.

关 键 词：DOPAMINE layer-by-layer GRAPHENE mono-(6-amino-6-deoxy)-β-cyclodextrin 

分 类 号：O65[理学—分析化学]