Self-induced redox cycling coupled luminescence on nanopore recessed disk-multiscale bipolar electrodes.

ABSTRACT: We present a new configuration for coupling fluorescence microscopy and voltammetry using self-induced redox cycling for ultrasensitive electrochemical measurements. An array of nanopores, each supporting a recessed disk electrode separated by 100 nm in depth from a planar multiscale bipolar top electrode, was fabricated using multilayer deposition, nanosphere lithography, and reactive-ion etching. Self-induced redox cycling was induced on the disk electrode producing ∼30× current amplification, which was independently confirmed by measuring induced electrogenerated chemiluminescence from Ru(bpy)₃^2/3+/tri-n-propylamine on the floating bipolar electrode. In this design, redox cycling occurs between the recessed disk and the top planar portion of a macroscopic th

SUBMITTER: Ma C 

PROVIDER: S-EPMC5490416 | biostudies-literature | 2015 May

REPOSITORIES: biostudies-literature