ELECTRIC LINEAR DICHROISM OF P700 CHLOROPHYLL U‐PROTEIN COMPLEXES

A. G. Gagliano, Nicholas Geacintov, J. Breton, S. Acker, R. Remy

Research output: Contribution to journalArticle

Abstract

Abstract— The P700 chlorophyll a‐protein complex (CPI) isolated from green plants was oriented in aqueous solutions using pulsed electric fields of up to 6700 V cm‐1. The electric linear dichroism spectrum is reported in the range of 400–720nm. Positive peaks in the linear dichroism ΔA=AI‐ A1 (where AI and A1 are the absorbance components in which the polarizer orientation is parallel and perpendicular with respect to the electric field. respectively) are observed at 443 and 686 nm. The ΔA signal at 686 nm is discussed in terms of either a specialized chlorophyll form absorbing at 686 nm. or due to an exciton component absorbing at the same wavelength.

Original languageEnglish (US)
Pages (from-to)415-418
Number of pages4
JournalPhotochemistry and Photobiology
Volume29
Issue number2
DOIs
StatePublished - 1979

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chlorophylls
Chlorophyll
dichroism
Electric fields
Viridiplantae
electric fields
Dichroism
polarizers
excitons
aqueous solutions
Wavelength
wavelengths
cyclopropapyrroloindole
LDS 751

ASJC Scopus subject areas

  • Medicine(all)
  • Biochemistry
  • Physical and Theoretical Chemistry

Cite this

ELECTRIC LINEAR DICHROISM OF P700 CHLOROPHYLL U‐PROTEIN COMPLEXES. / Gagliano, A. G.; Geacintov, Nicholas; Breton, J.; Acker, S.; Remy, R.

In: Photochemistry and Photobiology, Vol. 29, No. 2, 1979, p. 415-418.

Research output: Contribution to journalArticle

Gagliano, A. G. ; Geacintov, Nicholas ; Breton, J. ; Acker, S. ; Remy, R. / ELECTRIC LINEAR DICHROISM OF P700 CHLOROPHYLL U‐PROTEIN COMPLEXES. In: Photochemistry and Photobiology. 1979 ; Vol. 29, No. 2. pp. 415-418.
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