Linked Life Data

19708713

Source:http://linkedlifedata.com/resource/pubmed/id/19708713

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
35
pubmed:dateCreated
2009-8-27
pubmed:abstractText
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 approximately 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.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1520-6106
pubmed:author
pubmed:issnType
Print
pubmed:day
3
pubmed:volume
113
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
11999-2004
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Solvation dynamics of the fluorescent probe PRODAN in heterogeneous environments: contributions from the locally excited and charge-transferred states.
pubmed:affiliation
Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, USA.
pubmed:publicationType
Journal Article