PICOSECOND ABSORBENCY DIFFERENCE SPECTRA OF THE ANTENNA OF PHOTOSYNTHETIC PURPLE BACTERIA - THE INFLUENCE OF EXCITON INTERACTIONS AND LIBRATIONS

被引：4

作者：

DANIELIUS, R

NOVODEREZHKIN, V

RAZJIVIN, A

机构：

[1] MOSCOW MV LOMONOSOV STATE UNIV,CTR INT LASER,MOSCOW 119899,RUSSIA

[2] VILNIUS STATE UNIV,FAC PHYS,VILNIUS,LITHUANIA

[3] RUSSIAN ACAD SCI,SCI RES CTR TECHNOL LASERS,MOSCOW,RUSSIA

来源：

FEBS LETTERS | 1994年 / 345卷 / 2-3期

关键词：

EXCITON INTERACTION; PSEUDOLOCAL LIBRATIONAL MODE; BACTERIAL PHOTOSYNTHESIS; LIGHT-HARVESTING ANTENNA;

D O I：

10.1016/0014-5793(94)00428-5

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The influence of exciton interactions and pseudolocal librational modes on the relaxation of photo-induced absorption changes of the light-harvesting antenna of the photosynthetic purple bacterium, Rhodospirillum rubrum, was studied in the ps time domain. A hypothesis is put forward that the long-lived librational modes can occur in the circular aggregate of light-harvesting bacteriochlorophyll molecules of the core antenna. The model spectra obtained quantitatively fit the shape of the photo-induced picosecond absorbance difference spectra. The model predicts the decay of photo-induced spectra with the time constant within tens of picoseconds.

引用

收藏

页码：203 / 206

页数：4

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