We report on single molecule studies of photosensitized interfacial electron transfer (ET) processes in Coumarin 343 (C343)-TiO2 nanoparticle (NP) and Cresyl Violet (CV+)-TiO2 NP systems, using time-correlated single photon counting coupled with scanning confocal fluorescence microscopy. Fluorescence intensity trajectories of individual dye molecules adsorbed on a semiconductor NP surface showed fluorescence fluctuations and blinking, with time constrants distributed from sub-milliseconds to several seconds.
Revised: January 27, 2012 |
Published: August 4, 2004
Citation
Biju V.P., M. Micic, D. Hu, and H.P. Lu. 2004.Intermittent Single-Molecule Interfacial Electron Transfer Dynamics.Journal of the American Chemical Society 126, no. 30:9374-9381.PNNL-SA-40763.