Photoacoustic spectra and photovoltaic effect of flavins

R. Drabent, D. Fra̧ckowiak, Cz Jadzyn, S. Hotchandani, Roger Leblanc

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Photoacoustic spectra and the kinetics of the photovoltaic effect, as well as action spectra of 10-formylmethylisoalloxazine, riboflavin, flavomononucleotide and the complexes of flavins with riboflavin-bound proteins, were measured. The spectral regions of high efficiency of thermal deactivation of flavin excitation were observed. In these regions there could be high absorption of some aggregates of dye or there could be some vibronic transitions characterized by efficient thermal deactivation. The aggregation of chromophores with proteins causes the increase in the photoacoustic signal and the change in the shape of the photoacoustic spectrum. The illumination of a sample by light, causing a high photoacoustic signal, leads to low efficiency of photopotential generation. This means that the process of electron transfer from the excited pigment to the semiconducting electrode is less efficient when thermal deactivation is higher.

Original languageEnglish
Pages (from-to)25-28
Number of pages4
JournalBBA - General Subjects
Volume843
Issue number1-2
DOIs
StatePublished - Nov 22 1985
Externally publishedYes

Fingerprint

Flavins
Photovoltaic effects
Photoacoustic effect
Riboflavin
Hot Temperature
Lighting
Electrodes
Proteins
Coloring Agents
Chromophores
Pigments
Electrons
Light
Agglomeration
Kinetics

Keywords

  • Flavin
  • Photoacoustic spectrum
  • Photovoltaic effect

ASJC Scopus subject areas

  • Biochemistry
  • Biophysics
  • Molecular Biology

Cite this

Photoacoustic spectra and photovoltaic effect of flavins. / Drabent, R.; Fra̧ckowiak, D.; Jadzyn, Cz; Hotchandani, S.; Leblanc, Roger.

In: BBA - General Subjects, Vol. 843, No. 1-2, 22.11.1985, p. 25-28.

Research output: Contribution to journalArticle

Drabent, R, Fra̧ckowiak, D, Jadzyn, C, Hotchandani, S & Leblanc, R 1985, 'Photoacoustic spectra and photovoltaic effect of flavins', BBA - General Subjects, vol. 843, no. 1-2, pp. 25-28. https://doi.org/10.1016/0304-4165(85)90045-5
Drabent, R. ; Fra̧ckowiak, D. ; Jadzyn, Cz ; Hotchandani, S. ; Leblanc, Roger. / Photoacoustic spectra and photovoltaic effect of flavins. In: BBA - General Subjects. 1985 ; Vol. 843, No. 1-2. pp. 25-28.
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