About: Beta-carotene to bacteriochlorophyll-c energy transfer in self-assembled aggregates mimicking chlorosomes

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About: Beta-carotene to bacteriochlorophyll-c energy transfer in self-assembled aggregates mimicking chlorosomes Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Carotenoids are together with bacteriochlorophylls important constituents of chlorosomes, the light-harvesting antennae of green photosynthetic bacteria. Majority of bacteriochlorophyll molecules form self-assembling aggregates inside the chlorosomes. In this work, the ability of beta-carotene to induce aggregation of bacteriochlorophyll-c in aqueous buffer was studied. Excitation relaxation and energy transfer in the carotenoid-bacteriochlorophyll assemblies were measured using femtosecond and nanosecond transient absorption spectroscopy. A fast, similar to 100-fs energy transfer from the S2 state of beta-carotene to bacteriochlorophyll c was revealed, while no evidence for significant energy transfer from the S1 state was found. Picosecond formation of the carotenoid triplet state was observed, which was likely generated by singlet homo-fission from the S1 state of beta-carotene. Carotenoids are together with bacteriochlorophylls important constituents of chlorosomes, the light-harvesting antennae of green photosynthetic bacteria. Majority of bacteriochlorophyll molecules form self-assembling aggregates inside the chlorosomes. In this work, the ability of beta-carotene to induce aggregation of bacteriochlorophyll-c in aqueous buffer was studied. Excitation relaxation and energy transfer in the carotenoid-bacteriochlorophyll assemblies were measured using femtosecond and nanosecond transient absorption spectroscopy. A fast, similar to 100-fs energy transfer from the S2 state of beta-carotene to bacteriochlorophyll c was revealed, while no evidence for significant energy transfer from the S1 state was found. Picosecond formation of the carotenoid triplet state was observed, which was likely generated by singlet homo-fission from the S1 state of beta-carotene. (en)
Title	Beta-carotene to bacteriochlorophyll-c energy transfer in self-assembled aggregates mimicking chlorosomes Beta-carotene to bacteriochlorophyll-c energy transfer in self-assembled aggregates mimicking chlorosomes (en)
skos:prefLabel	Beta-carotene to bacteriochlorophyll-c energy transfer in self-assembled aggregates mimicking chlorosomes Beta-carotene to bacteriochlorophyll-c energy transfer in self-assembled aggregates mimicking chlorosomes (en)
skos:notation	RIV/60077344:_____/10:00348819!RIV12-AV0-60077344
http://linked.open...avai/riv/aktivita	I P S Z
http://linked.open...avai/riv/aktivity	I, P(GA202/09/1330), P(GA206/09/0375), P(GD202/09/H041), S, Z(AV0Z50510513), Z(MSM0021620835), Z(MSM6007665808)
http://linked.open...iv/cisloPeriodika	1-2
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Polívka, Tomáš Vácha, František
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Biologické centrum AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	248630
http://linked.open...ai/riv/idVysledku	RIV/60077344:_____/10:00348819
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	carotenoids; chlorosomes; energy transfer (en)
http://linked.open.../riv/klicoveSlovo	chlorosomes energy transfer carotenoids
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[D90C741CA005]
http://linked.open...i/riv/nazevZdroje	Chemical Physics
http://linked.open...in/vavai/riv/obor	BO
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Excited state properties of carotenoid aggregates Physics of nanostructures Self-assembling light-harvesting structures based on chlorosomes of green photosynthetic bacteria
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	373
http://linked.open...iv/tvurceVysledku	Chábera, P. Polívka, Tomáš Vácha, František Arellano, J. B. Alster, J. Pšenčík, J.
http://linked.open...ain/vavai/riv/wos	000280065100014
http://linked.open...n/vavai/riv/zamer	Výzkum struktury genetické informace rostlin a jejich patogenů na molekulární úrovni, indukce a analýza cílených změn genomu a plastomu a studium fotosyntetických procesů a projevů dědičnosti v interakci s prostředím a patogeny Fyzika molekulárních, makromolekulárních a biologických systémů Fyzikální biologie -nové přístupy v biologickém výzkumu
issn	0301-0104
number of pages	8 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.chemphys.2010.02.006
is http://linked.open...avai/riv/vysledek of	Beta-carotene to bacteriochlorophyll-c energy transfer in self-assembled aggregates mimicking chlorosomes Beta-carotene to bacteriochlorophyll-c energy transfer in self-assembled aggregates mimicking chlorosomes

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