Bacteriochlorophyll Aggregates Self-Assembled on Functionalized Gold Nanorod Cores as Mimics of Photosynthetic Chlorosomal Antennae: A Single Molecule Study

0430498 - BC 2015 RIV US eng J - Článek v odborném periodiku
Furumaki, S. - Vácha, František - Hirata, S. - Vácha, M.
Bacteriochlorophyll Aggregates Self-Assembled on Functionalized Gold Nanorod Cores as Mimics of Photosynthetic Chlorosomal Antennae: A Single Molecule Study.
ACS Nano. Roč. 8, č. 3 (2014), s. 2176-2182. ISSN 1936-0851. E-ISSN 1936-086X
Institucionální podpora: RVO:60077344
Klíčová slova: Single molecule spectroscopy * molecular aggregate * bacteriochlorophyll * chromosome
Kód oboru RIV: BO - Biofyzika
Impakt faktor: 12.881, rok: 2014

We prepare artificial aggregates that mimic the structure and function of natural chlorosomal light harvesting complexes of green photosynthetic bacteria. Gold nanorods functionalized with hydroxyl groups and immobilized on a substrate serve as cores for the growth of bacteriochlorophyll (BChl) aggregates from a buffer solution. The BChl pigments form large self-assembled aggregate particles with sizes more than twice that of natural chlorosomes. The size is controllable by the aggregation time. The aggregates are characterized on a single-particle level by atomic force microscopy, electron microscopy, and single-molecule spectroscopy. The absorption and fluorescence spectral properties which reflect the molecular level arrangement of the BChl aggregates closely resemble those of the natural chlorosomes of the photosynthetic bacterium Chlorobaculum tepidum.
Trvalý link: http://hdl.handle.net/11104/0235417