Tracking of single charge carriers in a conjugated polymer nanoparticle.
The motion of individual charge carriers in organic nanostructures was tracked by fluorescence microscopy. A twinkling effect is observed in fluorescence microscopy of single conjugated polymer nanoparticles, that is, small displacements in the fluorescence spot of single nanoparticles of the conjugated polymer PFBT are observed over time. There is evidence that superquenching by the charge carrier induces a dark spot in the nanoparticle, which moves with the carrier, resulting in the observed displacements in the fluorescence. Zero-field mobilities of individual charge carriers consistent with highly trapped polarons were obtained from tracking experiments.
Department of Chemistry, Clemson University, South Carolina 29634, USA.
Jiangbo
J
Yu
Changfeng
C
Wu
Zhiyuan
Z
Tian
Jason
J
McNeill
D005449:Fluorenes / Q000737:chemistry*; D008422:Materials Testing; D008856:Microscopy, Fluorescence / Q000379:methods*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D011829:Radiation Dosage; D011874:Radiometry / Q000379:methods*; D055672:Static Electricity
D005449:Fluorenes; D011108:Polymers; C556103:poly((9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-benzo-(2,1',3)-thiadiazole))