▎ 摘　　要

Graphene/mono-(6-amino-6-deoxy)--cyclodextrin multilayer films composed of graphene sheet (GS) and mono-(6-amino-6-deoxy)--cyclodextrin (NH2--CD) were fabricated easily by two steps. First, negatively charged graphene oxide (GO) and positively charged mono-(6-amino-6-deoxy)--cyclodextrin (NH2--CD) were layer-by-layer (LBL) self-assembled on glassy carbon electrode (GCE) modified with a layer of poly(diallyldimethylammonium chloride) (PDDA). Then graphene/mono-(6-amino-6-deoxy)--cyclodextrin (GS/NH2--CD) multilayer films were built up by electrochemical reduction of graphene oxide/mono-(6-amino-6-deoxy)--cyclodextrin (GO/NH2--CD). Combining the high surface area of GS and the active recognition sites on -cyclodextrin (-CD), the GS/NH2--CD multilayer films show excellent electrochemical sensing performance for the detection of DA with an extraordinary broad linear range from 2.53 to 980.05 mu molL-1. This study offers a simple route to the controllable formation of graphene-based electrochemical sensor for the detection of DA.