First analysis of strong directional surface plasmon-coupled emission(SPCE) of ground-state formed intermolecular aggregates of Rhodamine 110 (R110) insilica nanofilms deposited on silver nanolayers is reported. Until now, the processes ofenergy transport and its trapping due to aggregate formation have not been studied in the presence of SPCE. A new approach to multicomponent systems with weakly and strongly fluorescent centers making use of fluorophore−surface plasmon interaction is presented. The analysis is based on comparison of experimental free-space emission spectra (F-SE),experimental SPCE with theoretical surface plasmon resonance spectra (SPR). It is shown that, due to the dispersion of SPCE, the detection of weak aggregate emission is straightforward if only the monomers and aggregates fluorescence spectra are somewhatspectrally shifted. SPCE studies confirmed the formation of weakly fluorescent higher order aggregates of R110 in silica films. The results indicate that the increase of energy transfer from monomers to aggregates is due to fluorophore−plasmon interaction.
Authors
- Simeonika Rangełowa-Jankowska,
- Dawid Jankowski link open in new tab ,
- dr hab. inż. Robert Bogdanowicz link open in new tab ,
- Beata Grobelna,
- Piotr Sas-Bojarski link open in new tab
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.1021/jz301728y
- Category
- Publikacja w czasopiśmie
- Type
- artykuł w czasopiśmie wyróżnionym w JCR
- Language
- angielski
- Publication year
- 2012
