umu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Fluorescence spectroscopic properties analysed within the extended Förster theory with application to Biomacromolecular systems
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Umeå University, Faculty of Science and Technology, Department of Chemistry.
2009 (English)In: Journal of Fluorescence, ISSN 1053-0509, E-ISSN 1573-4994, Vol. 19, no 5, 837-845 p.Article in journal (Refereed) Published
Abstract [en]

The extended Förster theory (EFT) of electronic energy transport accounts for translational and rotational dynamics, which are neglected by the classical Förster theory (FT). EFT has been developed for electronic energy transfer within donor-acceptor pairs [Isaksson, et al, Phys. 16 Chem. Chem. Phys., 9, 1941(2007)] and donor-donor pairs [Johansson, et al, J. Chem. Phys., 105, 10896 (1996); Norlin, et al, Phys. Chem. Chem. Phys., 10, 6962(2008)]. For donors that exhibit different or identical non-exponential fluorescence relaxation within a donor-donor pair, the process of reverberating energy migration is reversible to a higher or lower degree. Here the impact of the EFT has been studied with respect to its influence on fluorescence quantum yields, fluorescence lifetimes as well as depolarisation experiments. The FT predicts relative fluorescence quantum yields which usually agree with the EFT within experimental accuracy, however, substantial deviations occurs in the steady-state and in particular the time-resolved depolarisation data. 

Place, publisher, year, edition, pages
Springer , 2009. Vol. 19, no 5, 837-845 p.
Keyword [en]
Electronic energy migration, Homotransfer, Donor-Donor Energy Migration (DDEM), Partial Donor-Donor Energy Migration (PDDEM)
Research subject
Physical Chemistry
Identifiers
URN: urn:nbn:se:umu:diva-22470DOI: 10.1007/s10895-009-0481-zOAI: oai:DiVA.org:umu-22470DiVA: diva2:216751
Available from: 2009-05-11 Created: 2009-05-11 Last updated: 2017-12-13Bibliographically approved
In thesis
1. Extended Förster Theory of Electronic Energy Transport within Pairs of Reorienting Chromophoric Molecules
Open this publication in new window or tab >>Extended Förster Theory of Electronic Energy Transport within Pairs of Reorienting Chromophoric Molecules
2009 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

An extended Förster theory (EFT), previously derived (L. B.-Å. Johansson et al. J. Chem. Phys., 1996,105) has theoretically been adapted and used in simulations of donor-acceptor energy transfer (DAET), which is a process often referred to as FRET. It was shown that the classical Förster theory is only valid in the initial part of the fluorescence decay. In this thesis an EFT is derived and outlined for electronic energy transport between two fluorescent molecules which are chemically identical, but photophysically non-identical. The energy migration within such asymmetric pairs is partially reversible and therefore referred to as partial donor-donor energy migration (PDDEM). The previously derived model of PDDEM (S. V. Kalinin et al. Spectrochim Acta Part A, 2002,58) is an approximation of the EFT. In particular, the EFT accounts for the time-dependent reorientations as well as the distance that influence the rate of electronic energy migration. The reorientation of the fluorophores transition dipole moments has been simulated using Brownian dynamics. As a result, the related “k2-problem” has been solved. The EFT of PDDEM has also been studied regarding the effect of PDDEM on experimental observables e.g. quantum yield of fluorescence and steady-state anisotropies

Place, publisher, year, edition, pages
Umeå: VMC-KBC, 2009. 37 p.
Keyword
electronic energy migration/transfer, extended Förster theory, orientation factor, DDEM, PDDEM, time-resolved fluorescence anisotropy, time-correlated single photon counting, Brownian dynamics
Research subject
Physical Chemistry
Identifiers
urn:nbn:se:umu:diva-22471 (URN)978-91-7264-783-1 (ISBN)
Public defence
2009-06-05, KB3A9, KBC huset, Umeå Universitet, 13:15 (English)
Opponent
Supervisors
Available from: 2009-05-15 Created: 2009-05-11 Last updated: 2009-05-15Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Norlin, NilsWestlund, Per-OlofJohansson, Lennart B-Å
By organisation
Department of Chemistry
In the same journal
Journal of Fluorescence

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 119 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf