Abstract
Photoinduced interfacial electron transfer (IET) in sulforhodamine B (SRhB)-aminosilane-Tin oxide (SnO2) nanoparticle donor-bridge- acceptor complexes has been studied on a single molecule and ensemble average level. On both SnO2 and ZrO2, 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 SnO2 than on ZrO2 is observed and attributed to IET from SRhB to SnO2. 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 ET 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.
| Original language | English |
|---|---|
| Pages (from-to) | 14309-14319 |
| Number of pages | 11 |
| Journal | Journal of Physical Chemistry B |
| Volume | 114 |
| Issue number | 45 |
| DOIs | |
| Publication status | Published - Dec 8 2010 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Materials Chemistry
- Surfaces, Coatings and Films
Cite this
Single-molecule interfacial electron transfer in donor-bridge-nanoparticle acceptor complexes. / Jin, Shengye; Snoeberger, Robert C.; Issac, Abey; Stockwell, David; Batista, Victor S.; Lian, Tianquan.
In: Journal of Physical Chemistry B, Vol. 114, No. 45, 08.12.2010, p. 14309-14319.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Single-molecule interfacial electron transfer in donor-bridge-nanoparticle acceptor complexes
AU - Jin, Shengye
AU - Snoeberger, Robert C.
AU - Issac, Abey
AU - Stockwell, David
AU - Batista, Victor S.
AU - Lian, Tianquan
PY - 2010/12/8
Y1 - 2010/12/8
N2 - Photoinduced interfacial electron transfer (IET) in sulforhodamine B (SRhB)-aminosilane-Tin oxide (SnO2) nanoparticle donor-bridge- acceptor complexes has been studied on a single molecule and ensemble average level. On both SnO2 and ZrO2, 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 SnO2 than on ZrO2 is observed and attributed to IET from SRhB to SnO2. 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 ET 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.
AB - Photoinduced interfacial electron transfer (IET) in sulforhodamine B (SRhB)-aminosilane-Tin oxide (SnO2) nanoparticle donor-bridge- acceptor complexes has been studied on a single molecule and ensemble average level. On both SnO2 and ZrO2, 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 SnO2 than on ZrO2 is observed and attributed to IET from SRhB to SnO2. 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 ET 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.
UR - http://www.scopus.com/inward/record.url?scp=78449280126&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78449280126&partnerID=8YFLogxK
U2 - 10.1021/jp911662g
DO - 10.1021/jp911662g
M3 - Article
C2 - 20225886
AN - SCOPUS:78449280126
VL - 114
SP - 14309
EP - 14319
JO - Journal of Physical Chemistry B Materials
JF - Journal of Physical Chemistry B Materials
SN - 1520-6106
IS - 45
ER -