Literature DB >> 17796152

Intensity Dependence of the Fluorescence Lifetime of in vivo Chlorophyll Excited by a Picosecond Light Pulse.

A J Campillo, V H Kollman, S L Shapiro.   

Abstract

New data on intensity-dependent lifetimes indicate that all previous in vivo fluorescence studies of chlorophyll by picosecond techniquies must be reinterpreted. Anomalously short lifetimes result from high-intensity effects due to exciton-excition annihilation processes. Measurements in Chlorella pyrenoidosa with single-pulse, low-intensity excitation indicate a longer "true" lifetime of 650 +/- 150 picoseconds.

Entities:  

Year:  1976        PMID： 17796152     DOI： 10.1126/science.193.4249.227

Source DB:  PubMed          Journal:  Science        ISSN： 0036-8075            Impact factor:   47.728


  11 in total

1.  Light collection and harvesting processes in bacterial photosynthesis investigated on a picosecond time scale.

Authors:  A J Campillo; R C Hyer; T G Monger; W W Parson; S L Shapiro
Journal:  Proc Natl Acad Sci U S A       Date:  1977-05       Impact factor: 11.205

2.  Bimolecular quenching of excitons and fluorescence in the photosynthetic unit.

Authors:  C E Swenberg; N E Geacintov; M Pope
Journal:  Biophys J       Date:  1976-12       Impact factor: 4.033

3.  Analysis of picosecond laser induced fluorescence phenomena in photosynthetic membranes utilizing a master equation approach.

Authors:  G Paillotin; C E Swenberg; J Breton; N E Geacintov
Journal:  Biophys J       Date:  1979-03       Impact factor: 4.033

4.  Kinetics of excited states of pigment clusters in solubilized light-harvesting complex II: photon density-dependent fluorescence yield and transmittance.

Authors:  R Schödel; F Hillmann; T Schrötter; J Voigt; K D Irrgang; G Renger
Journal:  Biophys J       Date:  1996-12       Impact factor: 4.033

5.  Exciton annihilation in the two photosystems in chloroplasts at 100 degrees K.

Authors:  N E Geacintov; J Breton
Journal:  Biophys J       Date:  1977-01       Impact factor: 4.033

6.  Picosecond and steady state, variable intensity and variable temperature emission spectroscopy of bacteriorhodopsin.

Authors:  S L Shapiro; A J Campillo; A Lewis; G J Perreault; J P Spoonhower; R K Clayton; W Stoeckenius
Journal:  Biophys J       Date:  1978-09       Impact factor: 4.033

7.  Low-intensity two-step absorption of chlorophyll A in vivo.

Authors:  D Leupold; B Voigt; S Mory; P Hoffmann; B Hieke
Journal:  Biophys J       Date:  1978-02       Impact factor: 4.033

8.  Lifetime of fluorescence from light-harvesting chlorophyll a/b proteins. Excitation intensity dependence.

Authors:  T M Nordlund; W H Knox
Journal:  Biophys J       Date:  1981-10       Impact factor: 4.033

9.  A picosecond pulse train study of exciton dynamics in photosynthetic membranes.

Authors:  N E Geacintov; C E Swenberg; A J Campillo; R C Hyer; S L Shapiro; K R Winn
Journal:  Biophys J       Date:  1978-10       Impact factor: 4.033

10.  Chlorophyll lasers: Stimulated light emission by chlorophylls and Mg-free chlorophyll derivatives.

Authors:  J C Hindman; R Kugel; A Svirmickas; J J Katz
Journal:  Proc Natl Acad Sci U S A       Date:  1977-01       Impact factor: 11.205
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