Biomedical Engineering Reference
In-Depth Information
Fig. 4.30
Comparison of
time-dependent luminescence
spectra of Qd and DTPP as a
function of solvent ratio
R
=
toluene: TEHOS. (
a
)
R
=
0:100 (
x
=
7); (
b
)
R
=
50:50 (
x
=
5); (
c
)
R
5). In titration
experiments we used
λ
=
100:0 (
x
=
412 nm, which
corresponds to an absorption
minimum for DTPP and a
100 times stronger QD
absorption. For this reason
direct excitation of DTPP
molecules is effectively low
but might be realized via
FRET
=
ex
