Paper Citing NAMD - Abstract
Jin, Shengye; Snoeberger, Robert C., I.I.I.; Issac, Abey; Stockwell, David; Batista, Victor S.; Lian, Tianquan
Single-Molecule Interfacial Electron Transfer in Donor-Bridge-Nanoparticle Acceptor Complexes
JOURNAL OF PHYSICAL CHEMISTRY B, 114:14309-14319, NOV 18 2010
Photoinduced interfacial electron transfer (IET) in sulforhodamine B (SRhB) aminosilane-I in oxide (SnO(2)) nanoparticle donor-bridge-acceptor complexes has been studied on a single molecule and ensemble average level On both SnO(2) and ZrO(2), the sum of single molecule fluorescence decays agree with the ensemble average results suggesting complete sampling of molecules under single molecule conditions Shorter fluorescence lifetime on SnO(2) than on ZrO(2) is observed and attributed to JET from SRhB to SnO(2) Single molecule lifetimes fluctuate with time and vary among different molecules, suggesting both static and dynamic IET heterogeneity in this system Computational modeling of the complexes shows a distribution of molecular conformation leading to a distribution of electronic coupling strengths and El rates It is likely that the conversion between these conformations led to the fluctuation of ET rate and fluorescence lifetime on the single molecule level
