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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10286191" target="_blank" >RIV/00216208:11320/14:10286191 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1039/c4cp01311e" target="_blank" >http://dx.doi.org/10.1039/c4cp01311e</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c4cp01311e" target="_blank" >10.1039/c4cp01311e</a>

Result language
angličtina
Original language name
Energy transfer in aggregates of bacteriochlorophyll c self-assembled with azulene derivatives
Original language 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
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BO - Biophysics
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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