Next Article in Journal
Next Article in Special Issue
Previous Article in Journal
Previous Article in Special Issue
Int. J. Mol. Sci. 2012, 13(9), 12100-12112; doi:10.3390/ijms130912100
Article

Photophysical Behaviors of Single Fluorophores Localized on Zinc Oxide Nanostructures

* ,
 and
Received: 16 July 2012; in revised form: 6 September 2012 / Accepted: 12 September 2012 / Published: 24 September 2012
(This article belongs to the Special Issue Advances in Single Molecule Spectroscopy)
View Full-Text   |   Download PDF [454 KB, uploaded 19 June 2014]
Abstract: Single-molecule fluorescence spectroscopy has now been widely used to investigate complex dynamic processes which would normally be obscured in an ensemble-averaged measurement. In this report we studied photophysical behaviors of single fluorophores in proximity to zinc oxide nanostructures by single-molecule fluorescence spectroscopy and time-correlated single-photon counting (TCSPC). Single fluorophores on ZnO surfaces showed enhanced fluorescence brightness to various extents compared with those on glass; the single-molecule time trajectories also illustrated pronounced fluctuations of emission intensities, with time periods distributed from milliseconds to seconds. We attribute fluorescence fluctuations to the interfacial electron transfer (ET) events. The fluorescence fluctuation dynamics were found to be inhomogeneous from molecule to molecule and from time to time, showing significant static and dynamic disorders in the interfacial electron transfer reaction processes.
Keywords: zinc oxide nanostructures; single molecule spectroscopy; interfacial electron transfer; radiative decay rate zinc oxide nanostructures; single molecule spectroscopy; interfacial electron transfer; radiative decay rate
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Fu, Y.; Zhang, J.; Lakowicz, J.R. Photophysical Behaviors of Single Fluorophores Localized on Zinc Oxide Nanostructures. Int. J. Mol. Sci. 2012, 13, 12100-12112.

AMA Style

Fu Y, Zhang J, Lakowicz JR. Photophysical Behaviors of Single Fluorophores Localized on Zinc Oxide Nanostructures. International Journal of Molecular Sciences. 2012; 13(9):12100-12112.

Chicago/Turabian Style

Fu, Yi; Zhang, Jian; Lakowicz, Joseph R. 2012. "Photophysical Behaviors of Single Fluorophores Localized on Zinc Oxide Nanostructures." Int. J. Mol. Sci. 13, no. 9: 12100-12112.


Int. J. Mol. Sci. EISSN 1422-0067 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert