Photothermal spectroscopy of bacteriochlorophyll - lipoprotein complexes

D. Frackowiak, R. Cegielski, I. Abdourakhmanov, R. M. Leblanc

Research output: Contribution to journalArticle

Abstract

Photoacoustic spectra at room and 85 K temperatures as well as photothermal beam deflection spectra of bacteriochlorophyll - lipoprotein complexes from purple bacterium Chromatium minutissimum were measured. Spectra were compared and obtained differences were tentatively explained by various inertion of these two methods. Photothermal beam deflection method measure the heat which is generated in close surroundings of absorbing pigment molecule, whereas usage of more inert photoacoustic signal is averaged over contributions from various pigments located in a larger sample volume and therefore is similar to absorption spectra.

Original languageEnglish (US)
Pages (from-to)327-333
Number of pages7
JournalBiochemical and biophysical research communications
Volume186
Issue number1
DOIs
StatePublished - Jul 15 1992
Externally publishedYes

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ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

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