▎ 摘　　要

Hybridization of poly(luminol) (PLM) and poly(neutral red) (PNR) has been successfully performed and further enhanced by a conductive and steric hybrid nanotemplate using graphene oxide (GO) and multiwalled carbon nanotubes (MWCNTs). The morphology of the PLM-PNR-MWCNT-GO mycelium-like nanocomposite is studied by SEM and AFM and it is found to be electroactive, pH-dependent, and stable in the electrochemical system. It shows electrocatalytic activity towards NADH with a high current response and low overpotential. Using amperometry, it has been shown to have a high sensitivity of 288.9 mu A mM(-1) cm(-2) to NADH (E-app. = +01 V). Linearity is estimated in a concentration range of 1.33 x 10(-8) to 1.95 x 10(-4) M with a detection limit of 1.33 x 10(-8) M (S/N = 3). Particularly, it also shows another linear range of 2.08 x 10(-4) to 5.81 x 10(-4) M with a sensitivity of 151.3 1.tA mM(-1) cm(-2). The hybridization and activity of PLM and PNR can be effectively enhanced by MWCNTs and GO, resulting in an active hybrid nanocomposite for determination of NADH.