Flavin mononucleotide fluorescence intensity decay in concentrated aqueous solutions

Hanna Grajek, Ignacy Gryczynski, Piotr Bojarski, Zygmunt Gryczynski, Shashank Bharill, Leszek Kułak

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

Time-resolved fluorescence and steady-state absorption measurements of FMN aqueous solutions were carried out over very broad dye concentration range. Efficient formation of FMN dimers with simultaneous absence of higher order aggregates even at highest concentrations was found from absorption spectra measurements. It was found that fluorescence intensity decays are strongly accelerated in the presence of dimers due to excitation energy trapping and become nonexponential. Mean localization time of excitation energy and mean number of its jumps between FMN molecules were calculated as a function of concentration.

Original languageEnglish
Pages (from-to)151-156
Number of pages6
JournalChemical Physics Letters
Volume439
Issue number1-3
DOIs
StatePublished - 4 May 2007

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