Femtosecond pump probe spectroscopy for the study of energy transfer of light-harvesting complexes from extractions of spinach leaves

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dc.contributor.authorOmbinda-Lemboumba, S.
dc.contributor.authorDu Plessis, A.
dc.contributor.authorSparrow, R. W.
dc.contributor.authorMolukanele, P.
dc.contributor.authorBotha, L. R.
dc.contributor.authorRohwer, E. G.
dc.contributor.authorSteenkamp, C. M.
dc.contributor.authorVan Rensburg, L.
dc.date.accessioned2011-05-15T15:55:10Z
dc.date.available2011-05-15T15:55:10Z
dc.date.issued2009-10
dc.descriptionThe original publication is available at http://www.sajs.co.za/en_ZA
dc.description.abstractMeasurements of ultrafast transient processes, of temporal durations in the picosecond and femtosecond regime, are made possible by femtosecond pump probe transient absorption spectroscopy. Such an ultrafast pump probe transient absorption setup has been implemented at the CSIR National Laser Centre and has been applied to investigate energy transfer processes in different parts of photosynthetic systems. in this paper we report on our first results obtained with Malachite green as a benchmark. Malachite green was chosen because the lifetime of its excited state is well known. We also present experimental results of the ultrafast energy transfer of light-harvesting complexes in samples prepared from spinach leaves. Various pump wavelengths in the range 600-680 nm were used; the probe was a white light continuum spanning 420-700 nm. The experimental setup is described in detail in this paper. Results obtained with these samples are consistent with those expected and achieved by other researchers in this field.en_ZA
dc.description.versionPublishers' version
dc.format.extent11 p. : ill. (some col.)
dc.identifier.citationOmbinda-Lemboumba, S.et al. 2009. Femtosecond pump probe spectroscopy for the study of energy transfer of light-harvesting complexes from extractions of spinach leaves. South African Journal of Science, 105(9/10):376-386.
dc.identifier.issn1996-7489 (online)
dc.identifier.issn0038-2353 (print)
dc.identifier.urihttp://hdl.handle.net/10019.1/9618
dc.publisherAcademy of Science of South Africa (ASSAf)
dc.rights.holderAuthors retain copyright
dc.subjectPump probe spectroscopyen_ZA
dc.subjectUltrafast spectroscopyen_ZA
dc.subjectFemtosecond lasersen_ZA
dc.subjectTransient absorptionen_ZA
dc.subjectLight-harvesting complex IIen_ZA
dc.subjectMalachite greenen_ZA
dc.subjectSpinacia oleraceaen_ZA
dc.titleFemtosecond pump probe spectroscopy for the study of energy transfer of light-harvesting complexes from extractions of spinach leavesen_ZA
dc.typeArticleen_ZA
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