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Influence of Plasmon Resonance in Silver Island Film on the Optical Properties of Peridinin-Chlorophyll-Protein Light-Harvesting Complexes

100%

Ciszak K., Olejnik M., Strzelecki J., Krajnik B., Piątkowski D., Hofmann E., Mackowski S.

Acta Physica Polonica A

2012

vol. 122

issue 2

275-278

We study the effect of plasmon excitations in silver island film on the optical properties of peridinin-chlorophyll-protein light-harvesting complex using scanning fluorescence microscopy. With this technique we can unambiguously locate areas where the biomolecules are deposited on the metallic nanostructures from the areas where they stick to the glass surface. The enhancement factor of fluorescence intensity obtained for such a hybrid nanostructure is found to be 3. Plasmon excitations in the SIF layer also influence the dynamics of the emission, but in this case the interpretation of the results is more complex.

Fluorescence Microscopy of Corrole-Single Silver Nanowire Hybrid Nanostructures

100%

Czechowski N., Olejnik M., Nowak-Król A., Piątkowski D., Heiss W., Gryko D., Mackowski S.

Acta Physica Polonica A

2012

vol. 122

issue 2

333-336

We report on confocal microscopy imaging of hybrid nanostructures composed of silver nanowires and corroles. Both nanomaterials were separated by a 30 nm thick SiO_2 spacer in order to inhibit fluorescence quenching. The results show that for such a hybrid nanostructure the average enhancement of the fluorescence intensity reached 2.5. Importantly, the coupling to plasmon excitations in metallic nanowires leaves no effect on the fluorescence spectrum of the organic molecules.

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

68%

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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3 Acta Physica Polonica A

2 2012

1 2009

3 Mackowski S.

3 Piątkowski D.

2 Hofmann E.

2 Olejnik M.

1 Agarwal A.

1 Brotosudarmo T.

1 Bräuchle C.

1 Bujak Ł.

1 Ciszak K.

1 Czechowski N.

1 Govorov A.

1 Gryko D.

1 Heiss W.

1 Hiller R.

1 Jung C.

1 Kotov N.

1 Krajnik B.

1 Nowak-Król A.

1 Scheer H.

1 Schulte T.

1 Strzelecki J.

1 Wörmke S.

Search results

Influence of Plasmon Resonance in Silver Island Film on the Optical Properties of Peridinin-Chlorophyll-Protein Light-Harvesting Complexes

Fluorescence Microscopy of Corrole-Single Silver Nanowire Hybrid Nanostructures

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