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  Study of preferential solvation in binary mixtures by means of frequency-domain fluorescence spectroscopy

Petrov, N. K., Markov, D. E., Gulakov, M. N., Alfimov, M. V., & Staerk, H. (2002). Study of preferential solvation in binary mixtures by means of frequency-domain fluorescence spectroscopy. Journal of Fluorescence, 12(1), 19-24. Retrieved from http://springerlink.metapress.com/content/39tftaayyreq4vd9/fulltext.pdf.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-F42A-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-E5A4-E
Genre: Journal Article

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17080.pdf (Publisher version), 0B
 
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 Creators:
Petrov, N. K.1, Author              
Markov, D. E., Author
Gulakov, M. N.1, Author              
Alfimov, M. V., Author
Staerk, H.2, Author              
Affiliations:
1Research Group of Structural Dynamics of (Bio)Chemical Systems, MPI for biophysical chemistry, Max Planck Society, ou_578564              
2Department of Spectroscopy and Photochemical Kinetics, MPI for biophysical chemistry, Max Planck Society, ou_578624              

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Free keywords: preferential solvation; frequency-domain fluorometry
 Abstract: The preferential solvation of 8-N,N-(dimethylamino)-11H- indeno[2,1-a]pyrene, Py(S)DMA, in its transient charge transfer (CT) state in binary solvents such as toluene/DMSO liquid mixtures was studied by means of frequency-domain fluorometry. The data obtained were considered within the following kinetic scheme: the preferential solvation was described by the system of consecutive reversible reactions of which each step is associated with the absorption of one DMSO molecule in the first solvation shell of the fluoresent Py(S)DMA dipolar CT molecule. The rate constants of the first two reversible elementary processes (i.e., the decay of solvation complexes of Py(S)DMA with one and two polar molecules, k(-1) = 1.1 10(9) s(-1) and k(-2) = 1.4 10(9) s(-1)) were deter-mined.

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Language(s): eng - English
 Dates: 2002-03
 Publication Status: Published in print
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 Rev. Method: Peer
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Title: Journal of Fluorescence
Source Genre: Journal
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Pages: - Volume / Issue: 12 (1) Sequence Number: - Start / End Page: 19 - 24 Identifier: -