ELECTROCATALYTIC REDUCTION OF NITRIC-OXIDE AT ELECTRODES MODIFIED WITH ELECTROPOLYMERIZED FILMS OF [CR(V-TPY)(2)](3+) AND THEIR APPLICATIONTO CELLULAR NO DETERMINATIONS

Nitric oxide can be electrocatalytically reduced at electrodes modifie d with electropolymerized films of [Cr(v-tpy)(2)](3+). Upon further mo dification with a thin film of Nafion (to prevent interferences from a nions, especially nitrite), these electrodes can be employed as NO sen sors in solution with submicromolar detection limits and fast response , We have carried out preliminary studies of cellular NO release from Rhodobacter sphaeroides bacterial cells with excellent results.