View in EDS

Exciton coupling induces vibronic hyperchromism in light-harvesting complexes.

Saved in:
Bibliographic Details
Title: Exciton coupling induces vibronic hyperchromism in light-harvesting complexes.
Authors: Schulze, Jan1, Torbj�rnsson, Magne2, K�hn, Oliver1 oliver.kuehn@uni-rostock.de, Pullerits, T�nu2 tonu.pullerits@chemphys.lu.se
Source: New Journal of Physics. Apr2014, Vol. 16 Issue 4, p045010-045022. 13p.
Subjects: Hyperchromic effect, Multi-configurational self-consistent field method, Fluorescence spectroscopy, Exciton theory, Spectral energy distribution, Vibronic coupling
Abstract: The recently suggested possibility that weak vibronic transitions can be excitonically enhanced in light-harvesting complexes is studied in detail. A vibronic exciton dimer model that includes ground-state vibrations is investigated using the multi-configuration time-dependent Hartree method with a parameter set typical to photosynthetic light-harvesting complexes. The absorption spectra are discussed based on the Coulomb coupling, the detuning of the site energies, and the number of vibrational modes. Fluorescence spectra calculations show that the spectral densities obtained from the low-temperature fluorescence line-narrowing measurements of light-harvesting systems need to be corrected for the effects of excitons. For the J-aggregate configuration, as in most light-harvesting complexes, the true spectral density has a larger amplitude than that obtained from the measurement. [ABSTRACT FROM AUTHOR]
Copyright of New Journal of Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 95807695
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Exciton coupling induces vibronic hyperchromism in light-harvesting complexes.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Schulze%2C+Jan%22">Schulze, Jan</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Torbj�rnsson%2C+Magne%22">Torbj�rnsson, Magne</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22K�hn%2C+Oliver%22">K�hn, Oliver</searchLink><relatesTo>1</relatesTo><i> oliver.kuehn@uni-rostock.de</i><br /><searchLink fieldCode="AR" term="%22Pullerits%2C+T�nu%22">Pullerits, T�nu</searchLink><relatesTo>2</relatesTo><i> tonu.pullerits@chemphys.lu.se</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22New+Journal+of+Physics%22">New Journal of Physics</searchLink>. Apr2014, Vol. 16 Issue 4, p045010-045022. 13p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Hyperchromic+effect%22">Hyperchromic effect</searchLink><br /><searchLink fieldCode="DE" term="%22Multi-configurational+self-consistent+field+method%22">Multi-configurational self-consistent field method</searchLink><br /><searchLink fieldCode="DE" term="%22Fluorescence+spectroscopy%22">Fluorescence spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Exciton+theory%22">Exciton theory</searchLink><br /><searchLink fieldCode="DE" term="%22Spectral+energy+distribution%22">Spectral energy distribution</searchLink><br /><searchLink fieldCode="DE" term="%22Vibronic+coupling%22">Vibronic coupling</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The recently suggested possibility that weak vibronic transitions can be excitonically enhanced in light-harvesting complexes is studied in detail. A vibronic exciton dimer model that includes ground-state vibrations is investigated using the multi-configuration time-dependent Hartree method with a parameter set typical to photosynthetic light-harvesting complexes. The absorption spectra are discussed based on the Coulomb coupling, the detuning of the site energies, and the number of vibrational modes. Fluorescence spectra calculations show that the spectral densities obtained from the low-temperature fluorescence line-narrowing measurements of light-harvesting systems need to be corrected for the effects of excitons. For the J-aggregate configuration, as in most light-harvesting complexes, the true spectral density has a larger amplitude than that obtained from the measurement. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of New Journal of Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=95807695
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1088/1367-2630/16/4/045010
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 13
        StartPage: 045010
    Subjects:
      – SubjectFull: Hyperchromic effect
        Type: general
      – SubjectFull: Multi-configurational self-consistent field method
        Type: general
      – SubjectFull: Fluorescence spectroscopy
        Type: general
      – SubjectFull: Exciton theory
        Type: general
      – SubjectFull: Spectral energy distribution
        Type: general
      – SubjectFull: Vibronic coupling
        Type: general
    Titles:
      – TitleFull: Exciton coupling induces vibronic hyperchromism in light-harvesting complexes.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Schulze, Jan
      – PersonEntity:
          Name:
            NameFull: Torbj�rnsson, Magne
      – PersonEntity:
          Name:
            NameFull: K�hn, Oliver
      – PersonEntity:
          Name:
            NameFull: Pullerits, T�nu
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 04
              Text: Apr2014
              Type: published
              Y: 2014
          Identifiers:
            – Type: issn-print
              Value: 13672630
          Numbering:
            – Type: volume
              Value: 16
            – Type: issue
              Value: 4
          Titles:
            – TitleFull: New Journal of Physics
              Type: main
ResultId 1