Biomedical Engineering Reference
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Fig. 4.10
( a ) Absorption and emission spectra (
λ exc =
465 nm) of 0.1
M QD-AM ( top )and
0.55
MPP( bottom ) in toluene at 295 K; ( b ) photoluminescence of “QD-PP” nanoassemblies at
x
1. Broken lines show a deconvolution of the spectra of QD and PP, respectively ( top ). QD-AM
photoluminescence quenching upon titration by PP at molar ratios x
=
=
0.2, 0.5, 0.9, 2.5, and 5 (line
color from orange to brown ). CdSe/ZnS QD-AM parameters: d CdSe
=
3.0 nm, n ZnS
=
2. Adapted
from [ 74 ]
Fig. 4.11 Relative I x / I 0 PL
quenching for QD-AM where
I 0 and I x are PL intensities for
pure QDs and at given molar
ratio x , correspondingly. For
dashed lines refer to
discussion. Adapted
from [ 74 ]
by intercalation of the aliphatic tale of DAP into the AM layer. A similar observation
has been discussed recently [ 36 , 37 ].
It is interestingly to note also that using PDI dyes with two different pyridyl-
type functional groups (namely DPP, and DTPP molecules shown in Fig. 4.3 ),
it is possible to realize geometrically well-defined “QD-PDI” nanoassemblies,
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