کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1495248 | 992930 | 2012 | 4 صفحه PDF | دانلود رایگان |
We study the fluorescence properties of peridinin-chlorophyll-protein light-harvesting complex reconstituted with both chlorophyll a and chlorophyll b coupled to spherical gold nanoparticles. Since there is a bidirectional energy transfer between the chlorophylls, the impact of plasmon excitations upon the energy transfer dynamics can be studied in such a hybrid nanostructure. The results show that the emission of both chlorophyll a and chlorophyll b in a reconstituted PCP is strongly enhanced when the light-harvesting complexes are separated from the metallic nanoparticles by a 12-nm-thick SiO2 layer, the average enhancement reaches a factor of 8. The analysis of fluorescence decay curves indicates that the energy transfer between chlorophyll a and chlorophyll b is also influenced by plasmon excitations in gold nanoparticles.
► Fabrication of plasmonic nanostructure with controlled dielectric spacer.
► Observation of emission enhancement of both Chl a and Chl b in a PCP complex.
► Detection of spectral signatures of plasmon induced changes of the energy transfer.
Journal: Optical Materials - Volume 34, Issue 12, October 2012, Pages 2076–2079