Počet záznamů: 1
Beta-carotene to bacteriochlorophyll-c energy transfer in self-assembled aggregates mimicking chlorosomes
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SYSNO ASEP 0348819 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Beta-carotene to bacteriochlorophyll-c energy transfer in self-assembled aggregates mimicking chlorosomes Tvůrce(i) Alster, J. (CZ)
Polívka, Tomáš (BC-A) RID, ORCID
Arellano, J.B. (ES)
Chábera, P. (CZ)
Vácha, František (BC-A) RID
Pšenčík, J. (CZ)Celkový počet autorů 6 Zdroj.dok. Chemical Physics. - : Elsevier - ISSN 0301-0104
Roč. 373, 1-2 (2010), s. 90-97Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova carotenoids ; chlorosomes ; energy transfer Vědní obor RIV BO - Biofyzika CEP GA206/09/0375 GA ČR - Grantová agentura ČR CEZ AV0Z50510513 - UMBR-M, BC-A (2005-2011) UT WOS 000280065100014 DOI 10.1016/j.chemphys.2010.02.006 Anotace 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. Pracoviště Biologické centrum (od r. 2006) Kontakt Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Rok sběru 2012
Počet záznamů: 1