Flavin mononucleotide fluorescence intensity decay in concentrated aqueous solutions

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

doi:10.1016/j.cplett.2007.03.042

Flavin mononucleotide fluorescence intensity decay in concentrated aqueous solutions

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

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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 language	English
Pages (from-to)	151-156
Number of pages	6
Journal	Chemical Physics Letters
Volume	439
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2007.03.042
State	Published - 4 May 2007

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10.1016/j.cplett.2007.03.042

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title = "Flavin mononucleotide fluorescence intensity decay in concentrated aqueous solutions",

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.",

author = "Hanna Grajek and Ignacy Gryczynski and Piotr Bojarski and Zygmunt Gryczynski and Shashank Bharill and Leszek Ku{\l}ak",

note = "Funding Information: This Letter has been supported by Grant BW 522-0706-0206 and BW 5200-5-0294-7. We would like to thank Texas Emerging Technologies Fund for supporting this work.",

year = "2007",

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doi = "10.1016/j.cplett.2007.03.042",

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T1 - Flavin mononucleotide fluorescence intensity decay in concentrated aqueous solutions

AU - Grajek, Hanna

AU - Gryczynski, Ignacy

AU - Bojarski, Piotr

AU - Gryczynski, Zygmunt

AU - Bharill, Shashank

AU - Kułak, Leszek

N1 - Funding Information: This Letter has been supported by Grant BW 522-0706-0206 and BW 5200-5-0294-7. We would like to thank Texas Emerging Technologies Fund for supporting this work.

PY - 2007/5/4

Y1 - 2007/5/4

N2 - 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.

AB - 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.

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DO - 10.1016/j.cplett.2007.03.042

M3 - Article

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SN - 0009-2614

VL - 439

SP - 151

EP - 156

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Flavin mononucleotide fluorescence intensity decay in concentrated aqueous solutions

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