Presentación Oral: "Spectroelectrochemistry studies of the charging and discharging of single conjugated-polymer nanoparticles"

PALACIOS, RODRIGO E.; BARBARA, PAUL F.; BARD, ALLEN J.; FAN, FU-REN F.

Chicago, Illinois, EE.UU.

Congreso; The 233rd American Chemical Society National Meeting; 2007

The American Chemical Society

The unique ability of single molecule spectroelectrochemisry, SMS-EC, to unravel complex electrochemical process in heterogeneous media is used to study the oxidation of nanoparticles of the practically important conjugated polymer poly (9,9-dioctylfluorene-co-benzothiadiazole) (F8BT). Two main processes have been observed, an irreversible chemical reaction on the surface of the oxidized F8BT nanoparticles, and a reversible hole-injection charging process. The latter occurs primarily by initial injection of shallow (untrapped) holes, but soon after the injection, the holes become deeply trapped.