About: Energy transfer in aggregates of bacteriochlorophyll c self-assembled with azulene derivatives

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About: Energy transfer in aggregates of bacteriochlorophyll c self-assembled with azulene derivatives Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1039/c4cp01311e
Description	Bacteriochlorophyll (BChl) c is the main light-harvesting pigment of certain photosynthetic bacteria. It is found in the form of self-assembled aggregates in the so-called chlorosomes. Here we report the results of co-aggregation experiments of BChl c with azulene and its tailored derivatives. We have performed spectroscopic and quantum chemical characterization of the azulenes, followed by self-assembly experiments. The results show that only azulenes with sufficient hydrophobicity are able to induce aggregation of BChl c. Interestingly, only azulene derivatives possessing a conjugated phenyl ring were capable of efficient (similar to 50%) excitation energy transfer to BChl molecules. These aggregates represent an artificial light-harvesting complex with enhanced absorption between 220 and 350 nm compared to aggregates of pure BChl c. The results provide insight into the principles of self-assembly of BChl aggregates and suggest an important role of the pi-pi interactions in efficient energy transfer. Bacteriochlorophyll (BChl) c is the main light-harvesting pigment of certain photosynthetic bacteria. It is found in the form of self-assembled aggregates in the so-called chlorosomes. Here we report the results of co-aggregation experiments of BChl c with azulene and its tailored derivatives. We have performed spectroscopic and quantum chemical characterization of the azulenes, followed by self-assembly experiments. The results show that only azulenes with sufficient hydrophobicity are able to induce aggregation of BChl c. Interestingly, only azulene derivatives possessing a conjugated phenyl ring were capable of efficient (similar to 50%) excitation energy transfer to BChl molecules. These aggregates represent an artificial light-harvesting complex with enhanced absorption between 220 and 350 nm compared to aggregates of pure BChl c. The results provide insight into the principles of self-assembly of BChl aggregates and suggest an important role of the pi-pi interactions in efficient energy transfer. (en)
Title	Energy transfer in aggregates of bacteriochlorophyll c self-assembled with azulene derivatives Energy transfer in aggregates of bacteriochlorophyll c self-assembled with azulene derivatives (en)
skos:prefLabel	Energy transfer in aggregates of bacteriochlorophyll c self-assembled with azulene derivatives Energy transfer in aggregates of bacteriochlorophyll c self-assembled with azulene derivatives (en)
skos:notation	RIV/00216208:11320/14:10286191!RIV15-GA0-11320___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GAP208/12/0622), P(GBP501/12/G055)
http://linked.open...iv/cisloPeriodika	31
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Alster, Jan Matěnová, Martina Pšenčík, Jakub Burda, Jaroslav
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	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	14624
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/14:10286191
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	fluorescence; carotenoids; organization; chlorosomes; charge-transport; absorption-spectra; chlorobium-tepidum; 17-propionate residue; density-functional theory; light-harvesting complexes (en)
http://linked.open.../riv/klicoveSlovo	17-propionate residue charge-transport chlorobium-tepidum light-harvesting complexes fluorescence chlorosomes density-functional theory organization carotenoids absorption-spectra
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[A6BA46A9F2A0]
http://linked.open...i/riv/nazevZdroje	Physical Chemistry Chemical Physics
http://linked.open...in/vavai/riv/obor	BO
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	8 (xsd:int)
http://linked.open...vavai/riv/projekt	Interactions of organometallic antitumor compounds with nucleic acids and proteins: study of sequence and substrate selectivity Photosynthesis Research Center
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	16
http://linked.open...iv/tvurceVysledku	Burda, Jaroslav Pšenčík, Jakub Alster, Jan Balaban, Teodor Silviu Dang, Florian-Xuan Horhoiu, Viviana Lorelei Matěnová, Martina Pospisil, Petr
http://linked.open...ain/vavai/riv/wos	000340075700046
issn	1463-9076
number of pages	10 (xsd:int)
http://bibframe.org/vocab/doi	10.1039/c4cp01311e
http://localhost/t...ganizacniJednotka	11320

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