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Light-Harvesting in Photosynthesis

100%

Scheer H.

Acta Physica Polonica A

2012

vol. 122

issue 2

247-251

A brief survey is given on the elementary reactions of photosynthesis, with an emphasis on the functional separation into reaction centers that perform, after excitation, an ultrafast charge separation across the photosynthetic membrane, and light-harvesting complexes that absorb light and transfer the excitation energy to the reaction centers. The basic concepts are compared to those of photovoltaics.

Plasmon Enhancement of Fluorescence in Single Light-Harvesting Complexes from em Amphidinium carterae

27%

Bujak Ł., Piątkowski D., Mackowski S., Wörmke S., Jung C., Bräuchle C., Agarwal A., Kotov N., Schulte T., Hofmann E., Brotosudarmo T., Scheer H., Govorov A., Hiller R.

Acta Physica Polonica A

2009

vol. 116

issue S

S-22-S-25

We show that single peridinin-chlorophyll a-protein light-harvesting complexes from dinoflagellate Amphidinium carterae placed near to silver nanoparticles show strongly enhanced fluorescence emission. Single molecule spectroscopy experiments performed at room temperature point toward an enhancement of more than an order of magnitude for optimal conditions. Irrespective of the enhancement, we observe no effect of the metal nanoparticle on the fluorescence emission energy of the complex. This result provides a way to control the optical properties of biomolecules via plasmon excitations in metal nanoparticles.

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2 Acta Physica Polonica A

1 2012

1 2009

2 Scheer H.

1 Agarwal A.

1 Brotosudarmo T.

1 Bräuchle C.

1 Bujak Ł.

1 Govorov A.

1 Hiller R.

1 Hofmann E.

1 Jung C.

1 Kotov N.

1 Mackowski S.

1 Piątkowski D.

1 Schulte T.

1 Wörmke S.

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Light-Harvesting in Photosynthesis

Plasmon Enhancement of Fluorescence in Single Light-Harvesting Complexes from em Amphidinium carterae