An application of a two-dimensional photoncounter for the determination of emission spectra of thermoluminescence from photosynthetic systems

Kintake Sonoike, Yorinao Inoue

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4 Citations (Scopus)

Abstract

Emission spectra of two components of thermoluminescence from photosynthetic systems were measured using a two-dimensional photoncounter. Application of this detector system enormously improved the signal to noise (S/N) ratio and enabled the determination of an emission spectrum of a specific thermoluminescence component. The B-band emitting at 30°C showed an emission spectrum having a single peak at 690 nm, whereas the Z-band emitting at -160°C showed a spectrum having two peaks, the major band at 740 nm and a satellite band at 690 nm. It was revealed that the longer wavelength component arises from photosystem I and the shorter wavelength component from photosystem II. Light harvesting chlorophyll a/b protein complexes (LHCI and LHCII) were also found to emit the Z-band at 740 and 690 nm, respectively. The advantage of a two-dimensional photoncounter for the determination of emission spectra of weak luminescence from large-surface biological samples is discussed.

Original languageEnglish
Pages (from-to)129-137
Number of pages9
JournalJournal of Luminescence
Volume51
Issue number1-3
DOIs
Publication statusPublished - 1992
Externally publishedYes

Fingerprint

Chlorophyll Binding Proteins
Photosystem I Protein Complex
Thermoluminescence
Photosystem II Protein Complex
Signal-To-Noise Ratio
thermoluminescence
Luminescence
emission spectra
Light
Wavelength
Signal to noise ratio
Satellites
Detectors
chlorophylls
Proteins
wavelengths
signal to noise ratios
chlorophyll b
luminescence
proteins

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Atomic and Molecular Physics, and Optics

Cite this

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abstract = "Emission spectra of two components of thermoluminescence from photosynthetic systems were measured using a two-dimensional photoncounter. Application of this detector system enormously improved the signal to noise (S/N) ratio and enabled the determination of an emission spectrum of a specific thermoluminescence component. The B-band emitting at 30°C showed an emission spectrum having a single peak at 690 nm, whereas the Z-band emitting at -160°C showed a spectrum having two peaks, the major band at 740 nm and a satellite band at 690 nm. It was revealed that the longer wavelength component arises from photosystem I and the shorter wavelength component from photosystem II. Light harvesting chlorophyll a/b protein complexes (LHCI and LHCII) were also found to emit the Z-band at 740 and 690 nm, respectively. The advantage of a two-dimensional photoncounter for the determination of emission spectra of weak luminescence from large-surface biological samples is discussed.",
author = "Kintake Sonoike and Yorinao Inoue",
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T1 - An application of a two-dimensional photoncounter for the determination of emission spectra of thermoluminescence from photosynthetic systems

AU - Sonoike, Kintake

AU - Inoue, Yorinao

PY - 1992

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N2 - Emission spectra of two components of thermoluminescence from photosynthetic systems were measured using a two-dimensional photoncounter. Application of this detector system enormously improved the signal to noise (S/N) ratio and enabled the determination of an emission spectrum of a specific thermoluminescence component. The B-band emitting at 30°C showed an emission spectrum having a single peak at 690 nm, whereas the Z-band emitting at -160°C showed a spectrum having two peaks, the major band at 740 nm and a satellite band at 690 nm. It was revealed that the longer wavelength component arises from photosystem I and the shorter wavelength component from photosystem II. Light harvesting chlorophyll a/b protein complexes (LHCI and LHCII) were also found to emit the Z-band at 740 and 690 nm, respectively. The advantage of a two-dimensional photoncounter for the determination of emission spectra of weak luminescence from large-surface biological samples is discussed.

AB - Emission spectra of two components of thermoluminescence from photosynthetic systems were measured using a two-dimensional photoncounter. Application of this detector system enormously improved the signal to noise (S/N) ratio and enabled the determination of an emission spectrum of a specific thermoluminescence component. The B-band emitting at 30°C showed an emission spectrum having a single peak at 690 nm, whereas the Z-band emitting at -160°C showed a spectrum having two peaks, the major band at 740 nm and a satellite band at 690 nm. It was revealed that the longer wavelength component arises from photosystem I and the shorter wavelength component from photosystem II. Light harvesting chlorophyll a/b protein complexes (LHCI and LHCII) were also found to emit the Z-band at 740 and 690 nm, respectively. The advantage of a two-dimensional photoncounter for the determination of emission spectra of weak luminescence from large-surface biological samples is discussed.

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