(a) Position of the EET excitation peak, extracted from the 2D
spectral analysis of the dye-filled PLE maps, as a function of the
s-SWCNT diameter. The pink shaded area (in both panels a and b) represents
the minimal encapsulation diameter range, and the purple shaded area
represents the diameter range after which a more complex behavior
is found with the diameter of the SWCNTs increasing according to the
green arrow in panel (b) (see also main text). (b) Peak positions
of empty (black stars), SQ-filled (red circles), and DCM-filled (green
circles) SWCNTs as obtained from the PLE fits. A clear change in S11/S22 peak position between the SQ- and DCM-filled
samples can be observed for SWCNTs with diameters similar or larger
than the (9,8) SWCNT, indicative of filling with the SQ-molecules,
also highlighted by the pink shaded area.