Nonradiative long range energy transfer in donor–acceptor systems with excluded volume

Rangełowa-Jankowska, Simeonika; Kułak, Leszek; Bojarski, Piotr

doi:10.1016/j.cplett.2008.05.033

Cited by 6 publications

(10 citation statements)

References 14 publications

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“…Let us now assume the acceptor molecules A 1 ,A 2 , ..., A NA are placed randomly on a surface of a cone as presented in Figure describing the geometry of the simulated system. Additionally, the Monte Carlo method can be rather easily extended to different topologies and further effects such as homotransfer. , The angles φ, ϑ, and Δϑ are necessary to define the locations of acceptor molecules. First, we randomly choose the angle ϑ 0 between the cone axis and the z axis from Cartesian coordinate system (cp.…”

Section: Methodsmentioning

confidence: 99%

“…The algorithm used (Metropolis algorithm) consists of the employment of the random-number generator for the cyclic formulation of answers to two questions: (1) When do any of the preset luminescent processes take place in the simulated system? and (2) What kind of process is it? , The Monte Carlo simulation is organized as follows: at first, the primarily excited donor molecule is placed in the center of a sphere, which represents the simulated system.…”

Section: Methodsmentioning

confidence: 99%

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Long-Distance FRET Analysis: A Monte Carlo Simulation Study

et al. 2011

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A new method for extending the utilizable range of Förster resonance energy transfer (FRET) is proposed and tested by the Monte Carlo technique. The obtained results indicate that the efficiency of FRET can be significantly enhanced at a given distance if the energy transfer takes place toward multiple acceptors that are closely located on a macromolecule instead of a single acceptor molecule as it is currently used in FRET analysis. On the other hand, reasonable FRET efficiency can be obtained at significantly longer distances than in the case of a single acceptor. Randomly distributed and parallel orientated acceptor transition moments with respect to the transition moment of the donor molecule have been analyzed as two extreme cases. As expected, a parallel orientation of donor and acceptor transition moments results in a more efficient excitation energy transfer. This finding could be used to directly reveal the assembly/deassembly of large protein complexes in a cell by fluorescence microscopy.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Long-Distance FRET Analysis: A Monte Carlo Simulation Study

et al. 2011

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“…Bojarski and co-workers have solved the problem by performing Monte Carlo simulations under conditions of low donor and high acceptor concentrations. 40 The results indicate that the inclusion of the excluded volume effect lengthens the average lifetime of the decay profiles. Obviously, the effect became more pronounced as the cavity radius and concentration increased.…”

Section: ■ Results and Discussionmentioning

confidence: 91%

“…In more detail, it showed two distinct temporal behaviors, and the crossover between those regimes depends on spatial confinements in molecular distributions. Bojarski and co-workers have solved the problem by performing Monte Carlo simulations under conditions of low donor and high acceptor concentrations . The results indicate that the inclusion of the excluded volume effect lengthens the average lifetime of the decay profiles.…”

Section: Resultsmentioning

confidence: 99%

Excluded Volume Effect in the Fluorescence Energy Transfer of Single Donor–Multiple Acceptors in Polymer

Lee

2012

J. Phys. Chem. B

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Fluorescence resonance energy transfer (FRET) from a donor to multiple acceptors is an interesting subject. Numerous studies using theoretical models and simulations have focused on the excluded volume effect, which was not considered in Förster's first derivation. In this work, we first present the experimental results on the excluded volume effect by employing time-resolved FRET. Coumarin 334 (C334) was used as the energy donor whereas hemin and cytochrome c (cyt c) were used as the energy acceptors. The fluorescence intensity decays were measured for C334 surrounded by a number of acceptors in poly(acrylic acid). We have observed that the excluded volume effect is markedly pronounced with cyt c compared with hemin when the acceptor concentration is high (>5 mM). The results, which may be explicitly described by the relative molecular sizes of two acceptors, showed that the excluded volume effect should be considered in the interpretation of FRET data, especially when bulk chromophores are used.

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“…To complement our earlier PMMA studies, we repeat the LR/R700 concentration-dependent fluorescence quenching experiments in liquid environments, where dynamic fluctuations provide a qualitatively different type of disorder. The use of the LR/R700 system in both liquids and solid PMMA allows us to focus on the effects of changing the environment since chemical factors like molecular volume, , specific donor–acceptor interactions, − and breakdowns in the point-dipole approximation − should all be similar in the different environments, allowing relative comparisons to be made. The novel aspect of the current work is that it quantitatively shows, using a single donor–acceptor system, how moving from a solid to a liquid host changes the energy migration rate.…”

Section: Introductionmentioning

confidence: 99%

Electronic Energy Migration in Solid versus Liquid Host Matrices for Concentrated Perylenediimide Dye Solutions

Colby

Bardeen

2011

J. Phys. Chem. A

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In this paper, we continue our evaluation of Forster-type theories of exciton diffusion in disordered environments. The perylenediimide dye Lumogen Red is used as a donor molecule in two different liquids, CHCl(3) and dimethylformamide, and the energy transfer to the acceptor molecule Rhodamine 700 is measured using time-resolved fluorescence decays. The exciton motion is measured over Lumogen Red concentrations ranging from 1 × 10(-4) to 5 × 10(-2) M, and the results are compared to previous results for exciton diffusion in a solid polymer. Depending on the theoretical approach used to analyze the data, we find that the energy migration in the liquids is a factor of 2-3 faster than in the solid polymer, even after taking molecular translation into account. Measurements for a Lumogen Red concentration of 10 mM in the different host environments yield diffusion constants ranging from 2.2 to 3.1 nm(2)/ns in the liquids, as compared to 1.1-1.2 nm(2)/ns in solid poly(methyl methacrylate) (PMMA). The results in the liquids are in good agreement with theoretical predictions and numerical simulations of previous workers, while the results in solid PMMA are 2-3 times slower. This discrepancy is discussed in the context of the rapid energetic averaging present in the liquid environments but absent in the solid matrix, where unfavorable configurations and low energy trapping sites are frozen in by the static disorder.

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Nonradiative long range energy transfer in donor–acceptor systems with excluded volume

Cited by 6 publications

References 14 publications

Long-Distance FRET Analysis: A Monte Carlo Simulation Study

Long-Distance FRET Analysis: A Monte Carlo Simulation Study

Excluded Volume Effect in the Fluorescence Energy Transfer of Single Donor–Multiple Acceptors in Polymer

Electronic Energy Migration in Solid versus Liquid Host Matrices for Concentrated Perylenediimide Dye Solutions

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