Search

A novel type of ion-selective nano-optode is proposed, in which a conjugated polymer is used as optical transducer and nanoprobe material.When a binding event occurs, positive charges are formed in the nanosphere, leading to a decrease in the oxidation state of the polymer, in the absence of redox potential change, resulting in increased emission. For the model system studied, the linear dependence of emission intensity on the logarithm of analyte (K+) concentration is obtained for a broad range from 10u5 M to 0.1 M.