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Dimer formation of a stilbenesulphonic acid salt in aqueous solution
University of Uppsala, Department of Physical Chemistry, Uppsala, Sweden.
Royal Institute of Technology, Physical Chemistry, Stockholm, Sweden.
Royal Institute of Technology, Physical Chemistry, Stockholm, Sweden.
University of Uppsala, Department of Physical Chemistry, Uppsala, Sweden; Latvian State Inst. of Wood Chem., Riga, Latvia.
1999 (English)In: Journal of Physical Organic Chemistry, ISSN 0894-3230, E-ISSN 1099-1395, Vol. 12, no 3, p. 171-175Article in journal (Refereed) Published
Abstract [en]

The steady-state and time-resolved fluorescence and 1H NMR spectra of a stilbenesulphonic acid salt, commonly used as an optical brightening agent, was studied as a function of concentration in aqueous solution. The aggregates, formed at higher concentrations, were shown to be predominantly dimers with the central stilbene moieties of the molecules stacked plane-parallel. The equilibrium constant for the dimer formation at 25°C was obtained from both NMR and fluorescence measurements.

Place, publisher, year, edition, pages
1999. Vol. 12, no 3, p. 171-175
Keywords [en]
Dimer formation, Fluorescence, NMR, Stilbenesulphonic acid salt
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:hig:diva-25387Scopus ID: 2-s2.0-4143071645OAI: oai:DiVA.org:hig-25387DiVA, id: diva2:1148002
Available from: 2017-10-09 Created: 2017-10-09 Last updated: 2018-03-13Bibliographically approved

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Björling, Mikael

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