Campus Units
Chemistry
Document Type
Article
Publication Version
Published Version
Publication Date
8-13-2009
Journal or Book Title
Journal of Physical Chemistry B
Volume
113
Issue
35
First Page
11999
Last Page
12004
DOI
10.1021/jp905139n
Abstract
The coexistence of different excited states with different properties of the same chromophores could have significant consequences for the accurate characterization of solvation dynamics in a heterogeneous environment, such as a protein. The purpose of this work is to study the contributions of the locally excited (LE) and charge-transferred (CT) states of the fluorescent probe molecule 6-propionyl-2-(N,N-dimethylamino)naphthalene (PRODAN) to its solvation dynamics in the heterogeneous environment provided by reverse micelles formed by sodium 1,4-bis-(2-ethylhexyl) sulfosuccinate (AOT)/n-heptane/water. We have found that the LE and CT states of PRODAN solvate on different time scales in reverse micelles (2 and ∼0.4 ns, respectively), consistent with results suggested in the literature, and have concluded that PRODAN’s use as a probe of heterogeneous environments must be used with caution and that, more importantly, the same caution must be exercised with any chromophore capable of emitting from different excited states.
Copyright Owner
American Chemical Society
Copyright Date
2009
Language
en
File Format
application/pdf
Recommended Citation
Adhikary, Ramkrishna; Barnes, Charles A.; and Petrich, Jacob W., "Solvation Dynamics of the Fluorescent Probe PRODAN in Heterogeneous Environments: Contributions from the Locally Excited and Charge-Transferred States" (2009). Chemistry Publications. 567.
https://lib.dr.iastate.edu/chem_pubs/567
Comments
Reprinted (adapted) with permission from Journal of Physical Chemistry B 113 (2009): 11999, doi: 10.1021/jp905139n. Copyright 2009 American Chemical Society.