These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: [Characteristics of mixed association and deactivation of electron excitation in chlorophyll-pheophytin complexes].
    Author: Zen'kevich EI, Zen'kevich TV.
    Journal: Mol Biol (Mosk); 1984; 18(3):667-75. PubMed ID: 6472265.
    Abstract:
    The regularities of the individual and mixed association of chlorophylls (Chl a, PChl a) with pheophytin (Pheo) were investigated. The complex studies of optical activity, spectral--luminescent and energetic characteristics of aggregates were carried out in mixture of solvents aceton-water (1:49). The formation of pigment mixed associates leads to intracomplex energy transfer from Chl (or PChl) to Pheo. It is shown that the efficiencies of such process, determined by independent ways via the luminescence quenching of energy donor or the emission sensibilization of acceptor, are identical. The energy migration mechanism is the inductive resonance one in studied complexes. The main patterns of the electronic excitation energy deactivation in such systems are discussed. The obtained results are analysed taking into account the contemporary background of the role of pheophytin in the primary processes of photosynthesis.
    [Abstract] [Full Text] [Related] [New Search]