Figure 4: High enhancement with short lifetime of single LH2 emission.
From: Strong antenna-enhanced fluorescence of a single light-harvesting complex shows photon antibunching
(a) Time-correlated single-photon counting traces of LH2 in PVA on glass (blue), L=160 nm Au NR-enhanced LH2 emission (green, red) and the Instrument Response Function (dark grey). Lighter dashed lines are fits of the experimental data. The fitted lifetimes are indicated in the legend. The time binning was 4 ps and excitation at λ=800 nm. (b) Scatter plot of the fluorescence lifetime versus the enhancement for 21 LH2 complexes. The blue square indicates the bulk lifetime of unenhanced LH2 in PVA. The traces shown in a are indicated with the same colour in b. The s.d. of the single unenhanced LH2 emission level of 15% (see Methods section) was used for the enhancement error bar. For the lifetimes, 95% confidence intervals are indicated.
