Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/114179
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- Title
- Chl-a triplet quenching by peridinin in H-PCP and organic solvent revealed by step-scan FTIR time-resolved spectroscopy
- Related
- Chemical physics, Vol. 357, No. 1-3 (2009), p.63-69
- DOI
- 10.1016/j.chemphys.2008.10.001
- Publisher
- Elsevier
- Date
- 2009
- FoR/RFCD Code(s)
-
020200 Atomic, Molecular, Nuclear, Particle and Plasma Physics
030600 Physical Chemistry (incl. Structural)
090400 Chemical Engineering
- Author/Creator
- Bonetti, C
- Author/Creator
- Alexandre, M. T. A
- Author/Creator
- Hiller, R. G
- Author/Creator
- Kennis, J. T. M
- Author/Creator
- van Grondelle, R
- Description
- Triplet-state dynamics in Chl-a/Per mixtures in organic solvent and in native H-PCP were studied by means of step-scan FTIR spectroscopy. A single decay component of 10 μs was observed for the H-PCP triplet, the spectrum of which closely matches the 13 μs component of A-PCP [Alexandre et al., Biophysical Journal 93 (2007) 2118–2128], implying that in H-PCP, as in A-PCP, the peridinin triplet state is shared with Chl-a. In a mixture of Chl-a and Per in THF, TEET from ³Chl-a to ³Per proceeds in 3.5 μs followed by ³Per decay in 7 μs. Using a target analysis procedure, ³Chl-a and ³Per infrared difference spectra were obtained. The specific carbonyl frequencies of ³Per and ³Chl-a in THF confirm our assignment of their co-existence in the infrared spectra of H-PCP and A-PCP.
- Description
- 7 page(s)
- Subject Keyword
- 020200 Atomic, Molecular, Nuclear, Particle and Plasma Physics
- Subject Keyword
- 030600 Physical Chemistry (incl. Structural)
- Subject Keyword
- 090400 Chemical Engineering
- Subject Keyword
- carotenoids
- Subject Keyword
- step-scan
- Subject Keyword
- peridinin
- Subject Keyword
- chlorophyll
- Subject Keyword
- infrared
- Subject Keyword
- time-resolved
- Resource Type
- journal article
- Organisation
- Macquarie University. Dept. of Biological Sciences
- Identifier
- http://hdl.handle.net/1959.14/114179
- Identifier
- ISSN:0301-0104
- Identifier
- mq-rm-2009002856
- Language
- eng
- Reviewed
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