Fluorescent detection of cholesterol using β-cyclodextrin functionalized graphene

A fluorescence based cholesterol detection method has been developed using competitive host–guest interaction between graphene bound β-cyclodextrin (β-CD) with rhodamine 6G (R6G) and cholesterol. Fluorescence of β-CD incorporated R6G is quenched by graphene but is ‘turned on’ by cholesterol as it replaces R6G from the β-CD host.