SUPPLEMENTAL MATERIAL
Fluorescence enhancement in large-scale self-assembled
gold nanoparticle double arrays
M. Chekini,1) R. Filter,2) J. Bierwagen,1), A. Cunningham, 1) C.
Rockstuhl,3,4) and T. Bürgi,1,c)
1
Département de Chimie Physique, Université de Genève, 1211 Genève, Switzerland.
2
Institute of Condensed Matter Theory and Solid State Optics, Abbe Center of Photonics,
Friedrich-Schiller-Universität Jena, D-07743 Jena, Germany
3
Institute of Nanotechnology, Karlsruhe Institute of Technology, D-76021 Karlsruhe,
Germany
4
Institute of Theoretical Solid State Physics, Karlsruhe Institute of Technology, D-76131
Karlsruhe, Germany
C
Author to whom correspondence should be addressed, E-mail: Thomas.Buergi@unige
1
λ Max (nm)
Number of Polyelectrolyte single layers
S 1 Maximum of extinction peaks depending on the number of applied PE layers. A red-shift is
observed because of an increased embedding of the gold nanoparticles inside dielectric layers.
S 2 Fluorescence emission of samples with a single gold nanoparticle array, with different
number of barrier bilayers (i) and CF™620R as a dye layer. We observed the enhancement in
dye emission in presence of the gold nanoparticles for smallest separation distance (i=0) and
quenching for the rest of samples. The emission maximum peak for all of the samples red shifted
compared to the reference dye sample.
2
Absorbance (a.u.)
S 3 Fluorescence emission spectra of double array samples with CF™620R as a dye layer. The
excitation wavelength was at 550 nm. By increasing the number of barrier layers we observed
the increase in enhancement, which almost leveled for i > 4.
Wavelength (nm)
S 4 Extinction spectra of dimer configuration samples with the NB dye capsulated as a middle
dye layer.
3
S 5 Fluorescence emission spectra of the double array samples with NB as a dye layer with
excitation at 590 nm is presented. The emission intensity increased by introducing a thicker
barrier layer between the dye and gold nanoparticles. The maximum enhancement in emission is
observed for i7.
S 6 Fluorescence emission spectra of the double array samples with CF™620R as a dye layer
with excitation at 590 nm. The emission intensity increased for a thicker barrier layer between
the dye and gold nanoparticle array. The maximum enhancement is achieved for i6.
4
Time (ps)
S 7 Normalized decay curves of CF™620R double array samples.
5